Foto van Gerard Schepers

Gerard Schepers

PhD-studenten accepteren

Ph.D.-projecten

Many, see publications in CV

20192023

Onderzoeksresultaten per jaar

Persoonlijk profiel

Personal profile

Education:

1986: Graduated at Delft University of Technology, Department of Aerospace Technology

2002: Propadeuse on Mathematics Teaching, UAS Windesheim (distance learning)

2012: PhD degree:”Engineering models in wind energy aerodynamics: Development, implementation and analysis using dedicated measurements Delft University of Technology. ISBN 978-94-6191-507-8

 

Appointments

1986-present: Senior Scientist Specialist on Wind Energy at TNO Energy Transition, the Netherlands(formerly the Energy Research Center of the Netherlands, ECN)
(until 2012:1.0 fte; after 2012: 0.6 fte)

August 2010: Visiting professor at Postech University (Korea)

June 2011: Visiting professor at Jeju University (Korea)

October 2016: Guest researcher at Forwind, Oldenburg, Germany

January 2012-November 2018: Professor Wind Energy at University of Applied Sciences NHL Leeuwarden
(0.4 fte)

November 2018-Present: Professor Wind Energy at University of Applied Sciences Hanze Groningen
(0.4 fte)

Main Topics:

  • Rotor Aerodynamics, Windfarm Aerodynamics, Aero-elasticity, Aero-acoustics, Wind Tunnel Testing, Wind Turbine Blade Design, Cost optimization
  • Involved in many industry related projects.
  • December 2007-December 2009: Stationed at Suzlon Blade Technology for consultancy activities during 4 days/month
  • Project manager of various national research projects and coordinator of 7 joined European research projects and 4 joined global IEA research projects, see e.g. https://iea-wind.org/task47/
    • Responsible for ECN training ‘Rotor Aerodynamics’ (as given for 15 wind energy industries)
  • Contributing as a teacher to the following annual lecture series at Dutch universities:
    • Wind Energy of the SET (Sustainable Energy Technology) master of the Technical University of Eindhoven (Since 2017 Sustainable Energy Sources of TU Eindhoven)
    • Aerodynamics master course of the Technical University of Delft
    • Energy Science, University of Utrecht
    • Renewable Energy Master, Environmental Sciences, University of Wageningen
    • Eurec Master Renewable Energies, University of Applied Sciences Hanze Groningen

Scientific relevance:

  • Author or co-author of more than 50 peer-reviewed scientific articles and more than 100 conference papers and technical reports.
  • Keynote speaker and chairman at almost all major wind energy conferences
  • Editor of  Wind Energy Aerodynamics Handbook, published by Springers in August 2022,
    https://link.springer.com/referencework/10.1007/978-3-030-05455-7

 

A selection of articles:

  • H. Snel and J.G. Schepers: Investigation and modelling of dynamic inflow effects, Journal of Wind Engineering (39), 267-281 (1992)
  • J.G. Schepers An engineering model for yawed conditions developed on basis of wind tunnel measurements ASME Wind Energy Symposium/ American Institute for Aeronautics and Astronautics, Reno USA, January 1999
  • Schepers, J.G. EU projects in German Dutch Wind Tunnel, DNW, Annual IEA symposium on the aerodynamics of wind turbines, NREL, USA, 4-5 December 2000.
  • S. Oerlemans, J. G. Schepers, G. Guidati, S. Wagner Experimental demonstration of wind turbine noise reduction through optimized airfoil shape and trailing-edge serrations, European Wind Energy Conference, Copenhagen, Denmark July 2001
  • Schepers, J.G.; Heijdra, J.J.; Thomsen, K.; Larsen, T.; Foussekis, D.; Rawlinson Smith, R.; Kraan, I.; Visser, B.; Øye, S.; Ganander, H.; Carlen, I.; Voutsinas, S.; Belessis, M.; Drost, L. Verification of European wind turbine design codes European Wind Energy Conference and Exhibition, Copenhagen, Denmark, July 2001.
  • Bulder, B.H.; Schepers, J.G.  Numerical optimisation for wind turbine design, based on aero-elastic analysis European Wind Energy Conference and Exhibition, Copenhagen, Denmark, 2-6 July 2001.
  • J.G Schepers, R Barthelmie, K Rados, B Lange and W Schlez  Large Off-Shore Windfarms: Linking Wake Models with Atmospheric Boundary Layer Models Wind Engineering Vol. 25 , No. 5, pp 307–316 (2001)
  • Thomsen, K.; Fuglsang, P; Schepers, G., Potentials for Site-Specific Design of MW Sized Wind Turbines, J. Solar Engineering, Vol. 123, pp. 304-309 (2001)
  • Schepers, J.G., Feigl, L, Van Rooij, R, Bruining A Analysis of Detailed Aerodynamic Field Measurements using Results from an Aeroelastic Code, Journal of Wind Energy, Vol. 7, issue 4 pp.357-371 (2004)
  • R.P.J.O.M. van Rooij and J.G. Schepers The Effect of Blade Geometry on Blade Stall Characteristics, Journal of Solar Energy Engineering, Volume 127 (2005)
  • J.G. Schepers, A. Curvers   S. Oerlemans, K. Braun, T. Lutz, A. Herrig, W. Wuerz,  B. Méndez López SIROCCO: Silent Rotors by Acoustic Optimisation Wind Turbine Noise: Perspectives for Control, Berlin, Germany, October 17-18, 2005
  • J.G. Schepers et al. Sirocco: Silent rotors by acoustic optimization, EWEC, Scientific Track, Athens, Greece 28 Feb - 2 March, 2006
  • G. Schepers and S.P van der Pijl Improved modelling of wake aerodynamics and assessment of new farm control strategies J. Phys.: Conf. Ser. 75 012039 (2007)
  • R J Barthelmie, O Rathmann, S T Frandsen, K S Hansen, E Politis, J Prospathopoulos, K Rados, D Cabezón, W Schlez, J Phillips, A Neubert, J G Schepers and S P van der Pijl Modelling and measurements of wakes in large wind farms Phys.: Conf. Ser. 75 012049 (2007)
  • Snel, J.G. Schepers and B. Montgomerie The Mexico project (Model experiments in Controlled conditions). The database and first results of data processing and interpretation . J. Phys.: Conf. Ser. 75  012014 (2007)
  • Machielse, L.A.H., Eecen, P.J., Korterink, H., Pijl, S.P. van der; Schepers, J.G. ECN test farm measurements for validation of wake models European Wind Energy Conference, Scientific track, Milan, Italy, 7-10 May 2007.
  • Schepers, J.G.; Curvers, A.P.W.M.; Oerlemans, S.; Braun, K.; Lutz, T.; Herrig, A.; Wuerz, W.; Mantesanz, A.; Garcillán, L.; Fisher, M.; Koegler, K.; Maeder, T, Sirocco: Silent rotors by acoustic optimization 2nd International Meeting on Wind Turbine Noise, Lyon France, September 20 and 21, 2007
  • S. Oerlemans and J.G. Schepers Prediction of Wind Turbine Noise and comparison to experiment, Contribution to the 2nd International Meeting on Wind Turbine Noise, Lyon France, September 20 and 21, 2007
  • Barthelmie, G. Larsen, S. Pryor, H. Jørgensen, H.Bergström, W. Schlez, K. Rados, B. Lange P. Vølund, S. Neckelmann, S. Mogensen, G. Schepers, T. Hegberg  L. Folkerts  M. Magnusson  ENDOW (efficient development of offshore wind farms): Modelling wake and boundary layer interactions Journal of Wind Energy, Vol. 7, issue 3 pp.225-245, July 2004
  • J. Barthelmie, K. Hansen, S. T. Frandsen, O. Rathmann, J.G. Schepers, W. Schlez, J. Phillips, K. Rados, A. Zervos, E. S. Politis, P. K. Chaviaropoulos Modelling and measuring flow and wind turbine wakes in large wind farms offshore Journal of Wind Energy Volume 12, Issue 5, Pages: 431-444, (2009)
  • G. Schepers, L. Pascal and H. Snel. First results from Mexnext: Analysis of detailed aerodynamic measurements on a 4.5 m diameter rotor placed in the large German Dutch Wind Tunnel DNW. European Wind Energy Conference, EWEC, Scientific track, Warsaw Poland April 2010.
  • G. Schepers, K. Boorsma, H. Snel IEA Task 29 Mexnext: Analysis of wind tunnel measurements from the EU project Mexico, ‘Science of Making Torque’, Crete, Greece June 2010
  • Oerlemans and J.G. Schepers Prediction of Wind Turbine Noise, the International Journal of Acoustics (2010)
  • G. Schepers, K. Boorsma, C. Kim and T. Cho: Results from Mexnext: Analysis of detailed aerodynamic measurements on a 4.5 m diameter rotor placed in the large German Dutch Wind Tunnel DNW. European Wind Energy Conference, EWEC, Scientific track, Brussels, Belgium.

April 2011

  • Maeda and G. Schepers Wind turbine performance assessment and knowledge management for aerodynamic behaviour modelling and design: IEA experience Contribution to the book ‘Wind energy systems, Optimising design and construction for safe and reliable operation’, Woodhead publishing Ltd.,ISBN 978-1-84569-527-9 (2011)
  • R. J. Barthelmie, S. C. Pryor, S. T. Frandsen K. S. Hansen, J.G. Schepers,  K. Rados,  W. Schlez,  A. Neuber, L. E. Jensen  and  S. Neckelman Quantifying the Impact of Wind Turbine Wakes on Power Output at Offshore Wind Farms, Journal of atmospheric and oceanic Technology, Volume 27, p 1302-1317, (2010)
  • F. Grasso, A van Garrel and J.G. Schepers Development and Validation of Generalized Lifting Line Based Code for Wind Turbine Aerodynamics 30th ASME Wind Energy Symposium, January 2011
  • R. Pereira, J.G. Schepers and M. Pavel Validation of the Beddoes Leishman Dynamic Stall model using Mexico DATA 30th ASME Wind Energy Symposium, January 2011
  • G. Schepers, J.G., T.S. Obdam, J. Prospathopoulos, Analysis of wake measurements from the ECN Wind Turbine Test Site Wieringermeer, EWTW Journal of Wind Energy, Volume 15, Issue 4, 575-591, John Wiley & Sons, Ltd, (2012)
  • G. Schepers, K. Boorsma, X. Munduate Final results of IEA Task 29 Mexnext ‘Science of Making Torque’, Oldenburg, Germany, October 2012
  • J.G. Schepers and S. Schreck: The importance of aerodynamics and the role of aerodynamic measurements Keynote presentation at the ‘Science of Making Torque’, Oldenburg, Germany, October 2012
  • Schreck and J.G. Schepers Unconventional power rotor response at yawed conditions ‘Science of Making Torque’, Oldenburg, Germany, October 2012
  • J.G. Schepers et al EERA-DTOC: Design tools for off-shore wind farm clusters, EWEA, Vienna Austria, February 6th, 2013
  • J.G. Schepers, Aerodynamic and acoustic international cooperation projects: How they (should) come together, IQPC Conference Noise And Vibration, Hamburg, Germany, November 2013
  • J.G. Schepers, EERA-DTOC How Aerodynamic and electrical aspects  come together in wind farm design, Presentation at EERA-Deepwind Conference, Trondheim, Norway January 2014
  • J.G. Schepers and K. Boorsma The important role of aerodynamic measurements for the reliable and cost effective design of wind turbines, Invited presentation at the 10th European Fluid Mechanics Conference September 17, 2014
  • J.G. Schepers et al AVATAR: AdVanced Aerodynamic Tools for lArge Rotors 33rd AIAA/ASME Wind Energy Symposium January 2015, Kissimee, USA
  • J.G. Schepers The importance of wind turbine aerodynamics illustrated with results from international cooperation projects  Keynote lecture at PhD seminar of the European Wind Energy Academy. Stuttgart, September 2015 
  • J.G. Schepers The leading role of the Netherlands in wind energy aerodynamics  (in Dutch) Dutch journal for Physical Sciences, January 2016
  • W.G.J.H.M. van Sark, J.G. Schepers1, J.D.A.M. van Wees The growing role of photovoltaic solar, wind and geothermal energy as renewables for electricity generation.
    in  Sustainability Assessment of Renewables-Based Products: Methods and Case Studies, 
    ISBN: 978-1-118-93394-7 (2016)
     (1 responsible for chapter on Wind Energy)
  • J.G. Schepers et al Latest results from the EU project AVATAR: How to model large wind turbines aerodynamically, EERA-Deepwind, Trondheim, Norway, January 2016
  • R. Quinn, B. Bulder and J.G. Schepers An investigation into the effect of low induction rotors on the levelised cost of electricity for a 1GW offshore wind farm, Energy Procedia Volume 94, Pages 164-172 (2016)
  • J.G. Schepers The International Small Wind Turbine Contest for Student Teams Invited lecture at WindPower 2016, The American Wind Energy Association, New Orleans, USAMay 2016
  • J.G. Schepers et al AVATAR: AdVanced Aerodynamic Tools for lArge Rotors Blade Workshop, Sandia Laboratory,Albuquerque, USA, August 2016
  • J.G. Schepers, O. Ceyhan, K. Boorsma, A. Gonzalez, X Munduate, O Pires, N.. Sørensen, C. Ferreira, G Sieros, J. Madsen, S. Voutsinas, T. Lutz, G. Barakos, S. Colonia, H. Heißelmann, F. Meng and A. Croce Latest results from the EU project AVATAR: Aerodynamic modelling of 10 MW turbines Science of Making Torque, Munich, Germany, October 2016
  • E. Parra, K. Boorsma, J.G. Schepers, H. Snel Momentum considerations on the New Mexico experiments, Science of Making Torque, Munich, Germany, October 2016
  • N.N. Soerensen, F. Zahle, K. Boorsma, J.G. Schepers CFD computations of the second round of MEXICO rotor measurements, Science of Making Torque, Munich, Germany, October 2016
  • L Oggiano, K Boorsma, J.G Schepers and M Kloosterman Comparison of simulation on the NewMexico rotor operating in pitch fault conditions,  Science of Making Torque, Munich, Germany, October 2016
  • Rahimi, M. Hartvelt, J. Peinke and J.G Schepers Investigation of the current yaw engineering models for simulation of wind turbines in BEM and comparison with CFD and experiment Science of Making Torque, Munich, Germany, October 2016
  • Boorsma and J.G.Schepers Rotor experiments in controlled conditions continued: New Mexico Science of Making Torque, Munich, Germany, October 2016
  • Chaviaropoulos, P.K., Jensen, P.H., Schepers, J.G.
    New Conceptual Designs for 10 MW – 20 MW Offshore Wind Turbines
    WindEurope Conference, November 2017
  • Boorsma and J.G. Schepers Wind Turbine Noise measurements in controlled conditions International Journal of AeroAcoustics, Volume: 16 issue: 7-8, page(s): 649-665 https://doi.org/10.1177/1475472X17729976 (2017)
  • Herráez, I., Daniele, E., and Schepers, J. G.: Extraction of the wake induction and angle of attack on rotating wind turbine blades from PIV and CFD results, Wind Energ. Sci., 3, 1-9, https://doi.org/10.5194/wes-3-1-2018, 20 (2018)
  • Rahimi, A. Martinez Garcia, B. Stoevesandt, J. Peinke, J.G. Schepers. An engineering model for wind turbines under yawed conditions derived from high fidelity models:. Wind Energy. 10.1002/we.2182 (2018)
  • Rahimi, J.G. Schepers, W.Z. Shen, N. Ramos García, M. Schneider, D. Micallef, C.  Ferreira, E. Jost, L. Klein, I.  Herráez Evaluation of different methods for determining the angle of attack on wind turbine blades with CFD results under axial inflow conditions. Renewable Energy. 125. 10.1016/j.renene.2018.03.018 (2018)
  • J.G. Schepers, K. Boorsma, N. Sørensen, Voutsinas, G Sieros, H. Rahimi, H. Heisselmann, E. Jost, T. Lutz, T.Maeder, A. Gonzalez, C. Ferreira, B. Stoevesandt, G. Barakos, N. Lampropoulos, A. Croce, J. Madsen Final results from the EU project AVATAR: Aerodynamic modelling of 10 MW wind turbines, Journal of Physics: Conference Series, Volume 1037, number 2,  http://stacks.iop.org/1742-6596/1037/i=2/a=022013 (2018)
  • K. Vimalakanthan, J.G Schepers, W.Z Shen, H. Rahimi, D. Micallef, C.J. Simao Ferreira, E. Jost, L. Klein Evaluation of different methods of determining the angle of attack on wind turbine blades under yawed inflow conditions, Journal of Physics: Conference Series, Volume 1037, number 2,  pages 022-028 http://stacks.iop.org/1742-6596/1037/i=2/a=022028 (2018)
  • B. Dose, H. Rahimi, B. Stoevesandt, J. Peinke, J.G. Schepers On the effect of blade deformations on the aerodynamic performance of wind turbine rotors subjected to yawed inflow Volume 1037, number 2,  pages 022-030 http://stacks.iop.org/1742-6596/1037/i=2/a=022030
    (2018)
  • K. Vimalakanthan, M. Caboni, J.G Schepers, E. Pechenik, P. Williams, Aerodynamic analysis of Ampyx’s airborne wind energy system, Journal of Physics: Conference Series, Volume 1037, number 6, http://stacks.iop.org/1742-6596/1037/i=6/a=062008 (2018)
  • Schepers JG, Schreck SJ. Aerodynamic measurements on wind turbines. WIREs Energy Environ. Advanced review 2018;e320. https://doi.org/10.1002/wene.320 (2018)
  • Chihoon Hur, Tom Berdowski, Carlos Simao Ferreira, Koen Boorsma, and Gerard Schepers. A review of momentum models for the actuator disk in yaw. In AIAA Scitech 2019 Forum, page 1799, 2019.
  • Adema, N., Kloosterman, M., and Schepers, G.: Development of a second-order dynamic stall model, Wind Energ. Sci., 5, 577–590, https://doi.org/10.5194/wes-5-577-2020, 2020. 
  • G. Schepers, P. van Dorp, R. A. Verzijlbergh, H.J.J. Jonker Aero-elastic loads on a 10 MW turbine exposed to extreme events selected from a year-long Large-Eddy Simulation over the North Sea. Wind Energy Science Conference, June 2019
  • Yu, W., Tavernier, D., Ferreira, C., van Kuik, G. A. M., and Schepers, G.: New dynamic-inflow engineering models based on linear and nonlinear actuator disc vortex models, Wind Energy, 22, 1433–1450, https://doi.org/https://doi.org/10.1002/we.2380, 2019.
  • M. A. Khan  C. Simão Ferreira, J.G Schepers N. N. Sørensen Spectral Analysis of New MEXICO Standstill Measurements to Investigate Vortex Shedding in Deep Stall in Wind Energy, https://doi.org/10.1002/we.2409, November 2019
  • J.G. Schepers, Windenergie, van Bries naar Storm, (In Dutch) Inaugural speech at Hanze University of Applied Science in Groningen, October 2019
    https://www.hanze.nl/assets/kennisportal/energy/Documents/Public/HANZE-19_0957%20Redeboekje%20Gerard%20Schepers%20LR.pdf
  • M. Elgammi, J.G. Schepers, S. Osta-Omar, A new vortex lift module and a 3D unsteady BEM algorithm for predicting the aerodynamic loads on blades of upwind and downwind turbines, Journal of Wind Energy, Article DOI: 10.1002/we.2508 2020
  • Ingrid Neunaber, Michael Hölling, Richard J. A. M. Stevens, Gerard Schepers and Joachim Peinke Distinct turbulent regions in the wake of a wind turbine and their inflow-dependent locations: the creation of a wake map, Journal of Energies
    https://www.mdpi.com/1996-1073/13/20/5392
  • Caboni, M. and Carrion, M. and Rodriguez, C. and Schepers, G. and Boorsma, K. and Sanderse, B. Assessment of sensitivity and accuracy of BEM-based aeroelastic models on wind turbine load predictions Journal of Physics: Conference Series, September 2020, DOI 10.1088/1742-6596/1618/4/04201
  • Schepers, J.G. Pragmatic Models: BEM with Engineering Add-Ons, Handbook of Wind Energy Aerodynamics, edited by Stoevesandt B, Schepers J.G., Fuglsang P and Yuping, S,
    Springer International Publishing, 2021,
    ISBN="978-3-030-05455-7, DOI 10.1007/978-3-030-05455-7_19-1, https://doi.org/10.1007/978-3-030-05455-7_19-1
  • Frederik Berger David Onnen, Gerard Schepers, and Martin Kühn Experimental analysis of radially resolved dynamic inflow effects due to pitch steps, wes-2021-70, 2021
  • Sanderse V. Dighe, K. Boorsma, G. Schepers Efficient Bayesian calibration of aerodynamic wind turbine models using surrogate modelling, Wind Energy Science 7, 759–781, 2022 https://doi.org/10.5194/wes-7-759-2022      
  • Stoevesandt B, Schepers J.G. , Fuglsang P and Yuping, S Schepers, J.G. The Issue of Aerodynamics in Wind Energy Handbook of Wind Energy Aerodynamics, edited by Stoevesandt B, Schepers J.G., Fuglsang P and Yuping, S, Springer International Publishing, 2021, ISBN="978-3-030-05455-7, DOI 10.1007/978-3-030-05455-7_19-1, https://doi.org/10.1007/978-3-030-05455-7_19-1
  • Koen Boorsma, Gerard Schepers, Helge Aagard Madsen, Georg Pirrung, Niels Sørensen, Galih Bangga, Manfred Imiela, Christian Grinderslev, Alexander Meyer Forsting, Wen Zhong Shen, Alessandro Croce, Stefano Cacciola, Alois Peter Schaffarczyk, Brandon Lobo, Frederic Blondel, Philippe Gilbert, Ronan Boisard, Leo Höning, Luca Greco, Claudio Testa, Emmanuel Branlard, Jason Jonkman, and Ganesh Vijayakumar
    Progress in validation of rotor aerodynamic codes using field data
    Wind Energy Science Discuss., https://doi.org/10.5194/wes-2022-51, 2022, Preprint
  • Alessandro Bianchini, Galih Bangga, Ian Baring-Gould, Alessandro Croce, José Ignacio Cruz, Rick Damiani, Gareth Erfort, Carlos Simao Ferreira, David Infield, Christian Navid Nayeri, George Pechlivanoglou, Mark Runacres, Gerard Schepers, Brent Summerville, David Wood, and Alice Orrell

Current status and grand challenges for small wind turbine technology

Wind Energy Science Discuss., https://doi.org/10.5194/wes-2022-34, 2022, Preprint

  • Kisorthman Vimalakanthan, Harald van der Mijle Meijer, Iana Bakhmet, and Gerard Schepers, CFD modelling of actual eroded wind turbine Wind Energy Science Discuss., https://doi.org/10.5194/wes-2022-65, 2022 Preprint
  • Berger, F., Neuhaus, L., Onnen, D., Hölling, M., Schepers, G., and Kühn, M.: Experimental analysis of the dynamic inflow effect due to coherent gusts, Wind Energ. Sci. Discuss. https://doi.org/10.5194/wes-2022-2, 2022.
  • C. Hur, C, Ferreira, G. Schepers, Applicability of dynamic inflow models in yaw, Journal Energies, 2034848, October 2022

 

Personal profile

Education

1986: Graduated at Delft University of Technology, Department of Aerospace Technology

2002: Propadeuse on Mathematics Teaching, UAS Windesheim (distance learning)

2012: PhD degree:”Engineering models in wind energy aerodynamics: Development, implementation and analysis using dedicated measurements Delft University of Technology. ISBN 978-94-6191-507-8

 

Appointments:

1986-present: Senior Scientist Specialist on Wind Energy at TNO Energy Transition, the Netherlands(formerly the Energy Research Center of the Netherlands, ECN)
(until 2012:1.0 fte; after 2012: 0.6 fte)

August 2010: Visiting professor at Postech University (Korea)

June 2011: Visiting professor at Jeju University (Korea)

October 2016: Guest researcher at Forwind, Oldenburg, Germany

January 2012-November 2018: Professor Wind Energy at University of Applied Sciences NHL Leeuwarden
(0.4 fte)

November 2018-Present: Professor Wind Energy at University of Applied Sciences Hanze Groningen
(0.4 fte)

 

Main Topics:

  • Rotor Aerodynamics, Windfarm Aerodynamics, Aero-elasticity, Aero-acoustics, Wind Tunnel Testing, Wind Turbine Blade Design, Cost optimization
  • Involved in many industry related projects.
  • December 2007-December 2009: Stationed at Suzlon Blade Technology for consultancy activities during 4 days/month
  • Project manager of various national research projects and coordinator of 7 joined European research projects and 4 joined global IEA research projects, see e.g. https://iea-wind.org/task47/
    • Responsible for ECN training ‘Rotor Aerodynamics’ (as given for 15 wind energy industries)
  • Contributing as a teacher to the following annual lecture series at Dutch universities:
    • Wind Energy of the SET (Sustainable Energy Technology) master of the Technical University of Eindhoven (Since 2017 Sustainable Energy Sources of TU Eindhoven)
    • Aerodynamics master course of the Technical University of Delft
    • Energy Science, University of Utrecht
    • Renewable Energy Master, Environmental Sciences, University of Wageningen
    • Eurec Master Renewable Energies, University of Applied Sciences Hanze Groningen

 

Scientific relevance:

  • Author or co-author of more than 50 peer-reviewed scientific articles and more than 100 conference papers and technical reports.
  • Keynote speaker and chairman at almost all major wind energy conferences
  • Editor of  Wind Energy Aerodynamics Handbook, published by Springers in August 2022,
    https://link.springer.com/referencework/10.1007/978-3-030-05455-7

 

A selection of articles:

  • H. Snel and J.G. Schepers: Investigation and modelling of dynamic inflow effects, Journal of Wind Engineering (39), 267-281 (1992)
  • J.G. Schepers An engineering model for yawed conditions developed on basis of wind tunnel measurements ASME Wind Energy Symposium/ American Institute for Aeronautics and Astronautics, Reno USA, January 1999
  • Schepers, J.G. EU projects in German Dutch Wind Tunnel, DNW, Annual IEA symposium on the aerodynamics of wind turbines, NREL, USA, 4-5 December 2000.
  • S. Oerlemans, J. G. Schepers, G. Guidati, S. Wagner Experimental demonstration of wind turbine noise reduction through optimized airfoil shape and trailing-edge serrations, European Wind Energy Conference, Copenhagen, Denmark July 2001
  • Schepers, J.G.; Heijdra, J.J.; Thomsen, K.; Larsen, T.; Foussekis, D.; Rawlinson Smith, R.; Kraan, I.; Visser, B.; Øye, S.; Ganander, H.; Carlen, I.; Voutsinas, S.; Belessis, M.; Drost, L. Verification of European wind turbine design codes European Wind Energy Conference and Exhibition, Copenhagen, Denmark, July 2001.
  • Bulder, B.H.; Schepers, J.G.  Numerical optimisation for wind turbine design, based on aero-elastic analysis European Wind Energy Conference and Exhibition, Copenhagen, Denmark, 2-6 July 2001.
  • J.G Schepers, R Barthelmie, K Rados, B Lange and W Schlez  Large Off-Shore Windfarms: Linking Wake Models with Atmospheric Boundary Layer Models Wind Engineering Vol. 25 , No. 5, pp 307–316 (2001)
  • Thomsen, K.; Fuglsang, P; Schepers, G., Potentials for Site-Specific Design of MW Sized Wind Turbines, J. Solar Engineering, Vol. 123, pp. 304-309 (2001)
  • Schepers, J.G., Feigl, L, Van Rooij, R, Bruining A Analysis of Detailed Aerodynamic Field Measurements using Results from an Aeroelastic Code, Journal of Wind Energy, Vol. 7, issue 4 pp.357-371 (2004)
  • R.P.J.O.M. van Rooij and J.G. Schepers The Effect of Blade Geometry on Blade Stall Characteristics, Journal of Solar Energy Engineering, Volume 127 (2005)
  • J.G. Schepers, A. Curvers   S. Oerlemans, K. Braun, T. Lutz, A. Herrig, W. Wuerz,  B. Méndez López SIROCCO: Silent Rotors by Acoustic Optimisation Wind Turbine Noise: Perspectives for Control, Berlin, Germany, October 17-18, 2005
  • J.G. Schepers et al. Sirocco: Silent rotors by acoustic optimization, EWEC, Scientific Track, Athens, Greece 28 Feb - 2 March, 2006
  • G. Schepers and S.P van der Pijl Improved modelling of wake aerodynamics and assessment of new farm control strategies J. Phys.: Conf. Ser. 75 012039 (2007)
  • R J Barthelmie, O Rathmann, S T Frandsen, K S Hansen, E Politis, J Prospathopoulos, K Rados, D Cabezón, W Schlez, J Phillips, A Neubert, J G Schepers and S P van der Pijl Modelling and measurements of wakes in large wind farms Phys.: Conf. Ser. 75 012049 (2007)
  • Snel, J.G. Schepers and B. Montgomerie The Mexico project (Model experiments in Controlled conditions). The database and first results of data processing and interpretation . J. Phys.: Conf. Ser. 75  012014 (2007)
  • Machielse, L.A.H., Eecen, P.J., Korterink, H., Pijl, S.P. van der; Schepers, J.G. ECN test farm measurements for validation of wake models European Wind Energy Conference, Scientific track, Milan, Italy, 7-10 May 2007.
  • Schepers, J.G.; Curvers, A.P.W.M.; Oerlemans, S.; Braun, K.; Lutz, T.; Herrig, A.; Wuerz, W.; Mantesanz, A.; Garcillán, L.; Fisher, M.; Koegler, K.; Maeder, T, Sirocco: Silent rotors by acoustic optimization 2nd International Meeting on Wind Turbine Noise, Lyon France, September 20 and 21, 2007
  • S. Oerlemans and J.G. Schepers Prediction of Wind Turbine Noise and comparison to experiment, Contribution to the 2nd International Meeting on Wind Turbine Noise, Lyon France, September 20 and 21, 2007
  • Barthelmie, G. Larsen, S. Pryor, H. Jørgensen, H.Bergström, W. Schlez, K. Rados, B. Lange P. Vølund, S. Neckelmann, S. Mogensen, G. Schepers, T. Hegberg  L. Folkerts  M. Magnusson  ENDOW (efficient development of offshore wind farms): Modelling wake and boundary layer interactions Journal of Wind Energy, Vol. 7, issue 3 pp.225-245, July 2004
  • J. Barthelmie, K. Hansen, S. T. Frandsen, O. Rathmann, J.G. Schepers, W. Schlez, J. Phillips, K. Rados, A. Zervos, E. S. Politis, P. K. Chaviaropoulos Modelling and measuring flow and wind turbine wakes in large wind farms offshore Journal of Wind Energy Volume 12, Issue 5, Pages: 431-444, (2009)
  • G. Schepers, L. Pascal and H. Snel. First results from Mexnext: Analysis of detailed aerodynamic measurements on a 4.5 m diameter rotor placed in the large German Dutch Wind Tunnel DNW. European Wind Energy Conference, EWEC, Scientific track, Warsaw Poland April 2010.
  • G. Schepers, K. Boorsma, H. Snel IEA Task 29 Mexnext: Analysis of wind tunnel measurements from the EU project Mexico, ‘Science of Making Torque’, Crete, Greece June 2010
  • Oerlemans and J.G. Schepers Prediction of Wind Turbine Noise, the International Journal of Acoustics (2010)
  • G. Schepers, K. Boorsma, C. Kim and T. Cho: Results from Mexnext: Analysis of detailed aerodynamic measurements on a 4.5 m diameter rotor placed in the large German Dutch Wind Tunnel DNW. European Wind Energy Conference, EWEC, Scientific track, Brussels, Belgium.

April 2011

  • Maeda and G. Schepers Wind turbine performance assessment and knowledge management for aerodynamic behaviour modelling and design: IEA experience Contribution to the book ‘Wind energy systems, Optimising design and construction for safe and reliable operation’, Woodhead publishing Ltd.,ISBN 978-1-84569-527-9 (2011)
  • R. J. Barthelmie, S. C. Pryor, S. T. Frandsen K. S. Hansen, J.G. Schepers,  K. Rados,  W. Schlez,  A. Neuber, L. E. Jensen  and  S. Neckelman Quantifying the Impact of Wind Turbine Wakes on Power Output at Offshore Wind Farms, Journal of atmospheric and oceanic Technology, Volume 27, p 1302-1317, (2010)
  • F. Grasso, A van Garrel and J.G. Schepers Development and Validation of Generalized Lifting Line Based Code for Wind Turbine Aerodynamics 30th ASME Wind Energy Symposium, January 2011
  • R. Pereira, J.G. Schepers and M. Pavel Validation of the Beddoes Leishman Dynamic Stall model using Mexico DATA 30th ASME Wind Energy Symposium, January 2011
  • G. Schepers, J.G., T.S. Obdam, J. Prospathopoulos, Analysis of wake measurements from the ECN Wind Turbine Test Site Wieringermeer, EWTW Journal of Wind Energy, Volume 15, Issue 4, 575-591, John Wiley & Sons, Ltd, (2012)
  • G. Schepers, K. Boorsma, X. Munduate Final results of IEA Task 29 Mexnext ‘Science of Making Torque’, Oldenburg, Germany, October 2012
  • J.G. Schepers and S. Schreck: The importance of aerodynamics and the role of aerodynamic measurements Keynote presentation at the ‘Science of Making Torque’, Oldenburg, Germany, October 2012
  • Schreck and J.G. Schepers Unconventional power rotor response at yawed conditions ‘Science of Making Torque’, Oldenburg, Germany, October 2012
  • J.G. Schepers et al EERA-DTOC: Design tools for off-shore wind farm clusters, EWEA, Vienna Austria, February 6th, 2013
  • J.G. Schepers, Aerodynamic and acoustic international cooperation projects: How they (should) come together, IQPC Conference Noise And Vibration, Hamburg, Germany, November 2013
  • J.G. Schepers, EERA-DTOC How Aerodynamic and electrical aspects  come together in wind farm design, Presentation at EERA-Deepwind Conference, Trondheim, Norway January 2014
  • J.G. Schepers and K. Boorsma The important role of aerodynamic measurements for the reliable and cost effective design of wind turbines, Invited presentation at the 10th European Fluid Mechanics Conference September 17, 2014
  • J.G. Schepers et al AVATAR: AdVanced Aerodynamic Tools for lArge Rotors 33rd AIAA/ASME Wind Energy Symposium January 2015, Kissimee, USA
  • J.G. Schepers The importance of wind turbine aerodynamics illustrated with results from international cooperation projects  Keynote lecture at PhD seminar of the European Wind Energy Academy. Stuttgart, September 2015 
  • J.G. Schepers The leading role of the Netherlands in wind energy aerodynamics  (in Dutch) Dutch journal for Physical Sciences, January 2016
  • W.G.J.H.M. van Sark, J.G. Schepers1, J.D.A.M. van Wees The growing role of photovoltaic solar, wind and geothermal energy as renewables for electricity generation.
    in  Sustainability Assessment of Renewables-Based Products: Methods and Case Studies, 
    ISBN: 978-1-118-93394-7 (2016)
     (1 responsible for chapter on Wind Energy)
  • J.G. Schepers et al Latest results from the EU project AVATAR: How to model large wind turbines aerodynamically, EERA-Deepwind, Trondheim, Norway, January 2016
  • R. Quinn, B. Bulder and J.G. Schepers An investigation into the effect of low induction rotors on the levelised cost of electricity for a 1GW offshore wind farm, Energy Procedia Volume 94, Pages 164-172 (2016)
  • J.G. Schepers The International Small Wind Turbine Contest for Student Teams Invited lecture at WindPower 2016, The American Wind Energy Association, New Orleans, USAMay 2016
  • J.G. Schepers et al AVATAR: AdVanced Aerodynamic Tools for lArge Rotors Blade Workshop, Sandia Laboratory,Albuquerque, USA, August 2016
  • J.G. Schepers, O. Ceyhan, K. Boorsma, A. Gonzalez, X Munduate, O Pires, N.. Sørensen, C. Ferreira, G Sieros, J. Madsen, S. Voutsinas, T. Lutz, G. Barakos, S. Colonia, H. Heißelmann, F. Meng and A. Croce Latest results from the EU project AVATAR: Aerodynamic modelling of 10 MW turbines Science of Making Torque, Munich, Germany, October 2016
  • E. Parra, K. Boorsma, J.G. Schepers, H. Snel Momentum considerations on the New Mexico experiments, Science of Making Torque, Munich, Germany, October 2016
  • N.N. Soerensen, F. Zahle, K. Boorsma, J.G. Schepers CFD computations of the second round of MEXICO rotor measurements, Science of Making Torque, Munich, Germany, October 2016
  • L Oggiano, K Boorsma, J.G Schepers and M Kloosterman Comparison of simulation on the NewMexico rotor operating in pitch fault conditions,  Science of Making Torque, Munich, Germany, October 2016
  • Rahimi, M. Hartvelt, J. Peinke and J.G Schepers Investigation of the current yaw engineering models for simulation of wind turbines in BEM and comparison with CFD and experiment Science of Making Torque, Munich, Germany, October 2016
  • Boorsma and J.G.Schepers Rotor experiments in controlled conditions continued: New Mexico Science of Making Torque, Munich, Germany, October 2016
  • Chaviaropoulos, P.K., Jensen, P.H., Schepers, J.G.
    New Conceptual Designs for 10 MW – 20 MW Offshore Wind Turbines
    WindEurope Conference, November 2017
  • Boorsma and J.G. Schepers Wind Turbine Noise measurements in controlled conditions International Journal of AeroAcoustics, Volume: 16 issue: 7-8, page(s): 649-665 https://doi.org/10.1177/1475472X17729976 (2017)
  • Herráez, I., Daniele, E., and Schepers, J. G.: Extraction of the wake induction and angle of attack on rotating wind turbine blades from PIV and CFD results, Wind Energ. Sci., 3, 1-9, https://doi.org/10.5194/wes-3-1-2018, 20 (2018)
  • Rahimi, A. Martinez Garcia, B. Stoevesandt, J. Peinke, J.G. Schepers. An engineering model for wind turbines under yawed conditions derived from high fidelity models:. Wind Energy. 10.1002/we.2182 (2018)
  • Rahimi, J.G. Schepers, W.Z. Shen, N. Ramos García, M. Schneider, D. Micallef, C.  Ferreira, E. Jost, L. Klein, I.  Herráez Evaluation of different methods for determining the angle of attack on wind turbine blades with CFD results under axial inflow conditions. Renewable Energy. 125. 10.1016/j.renene.2018.03.018 (2018)
  • J.G. Schepers, K. Boorsma, N. Sørensen, Voutsinas, G Sieros, H. Rahimi, H. Heisselmann, E. Jost, T. Lutz, T.Maeder, A. Gonzalez, C. Ferreira, B. Stoevesandt, G. Barakos, N. Lampropoulos, A. Croce, J. Madsen Final results from the EU project AVATAR: Aerodynamic modelling of 10 MW wind turbines, Journal of Physics: Conference Series, Volume 1037, number 2,  http://stacks.iop.org/1742-6596/1037/i=2/a=022013 (2018)
  • K. Vimalakanthan, J.G Schepers, W.Z Shen, H. Rahimi, D. Micallef, C.J. Simao Ferreira, E. Jost, L. Klein Evaluation of different methods of determining the angle of attack on wind turbine blades under yawed inflow conditions, Journal of Physics: Conference Series, Volume 1037, number 2,  pages 022-028 http://stacks.iop.org/1742-6596/1037/i=2/a=022028 (2018)
  • B. Dose, H. Rahimi, B. Stoevesandt, J. Peinke, J.G. Schepers On the effect of blade deformations on the aerodynamic performance of wind turbine rotors subjected to yawed inflow Volume 1037, number 2,  pages 022-030 http://stacks.iop.org/1742-6596/1037/i=2/a=022030
    (2018)
  • K. Vimalakanthan, M. Caboni, J.G Schepers, E. Pechenik, P. Williams, Aerodynamic analysis of Ampyx’s airborne wind energy system, Journal of Physics: Conference Series, Volume 1037, number 6, http://stacks.iop.org/1742-6596/1037/i=6/a=062008 (2018)
  • Schepers JG, Schreck SJ. Aerodynamic measurements on wind turbines. WIREs Energy Environ. Advanced review 2018;e320. https://doi.org/10.1002/wene.320 (2018)
  • Chihoon Hur, Tom Berdowski, Carlos Simao Ferreira, Koen Boorsma, and Gerard Schepers. A review of momentum models for the actuator disk in yaw. In AIAA Scitech 2019 Forum, page 1799, 2019.
  • Adema, N., Kloosterman, M., and Schepers, G.: Development of a second-order dynamic stall model, Wind Energ. Sci., 5, 577–590, https://doi.org/10.5194/wes-5-577-2020, 2020. 
  • G. Schepers, P. van Dorp, R. A. Verzijlbergh, H.J.J. Jonker Aero-elastic loads on a 10 MW turbine exposed to extreme events selected from a year-long Large-Eddy Simulation over the North Sea. Wind Energy Science Conference, June 2019
  • Yu, W., Tavernier, D., Ferreira, C., van Kuik, G. A. M., and Schepers, G.: New dynamic-inflow engineering models based on linear and nonlinear actuator disc vortex models, Wind Energy, 22, 1433–1450, https://doi.org/https://doi.org/10.1002/we.2380, 2019.
  • M. A. Khan  C. Simão Ferreira, J.G Schepers N. N. Sørensen Spectral Analysis of New MEXICO Standstill Measurements to Investigate Vortex Shedding in Deep Stall in Wind Energy, https://doi.org/10.1002/we.2409, November 2019
  • J.G. Schepers, Windenergie, van Bries naar Storm, (In Dutch) Inaugural speech at Hanze University of Applied Science in Groningen, October 2019
    https://www.hanze.nl/assets/kennisportal/energy/Documents/Public/HANZE-19_0957%20Redeboekje%20Gerard%20Schepers%20LR.pdf
  • M. Elgammi, J.G. Schepers, S. Osta-Omar, A new vortex lift module and a 3D unsteady BEM algorithm for predicting the aerodynamic loads on blades of upwind and downwind turbines, Journal of Wind Energy, Article DOI: 10.1002/we.2508 2020
  • Ingrid Neunaber, Michael Hölling, Richard J. A. M. Stevens, Gerard Schepers and Joachim Peinke Distinct turbulent regions in the wake of a wind turbine and their inflow-dependent locations: the creation of a wake map, Journal of Energies
    https://www.mdpi.com/1996-1073/13/20/5392
  • Caboni, M. and Carrion, M. and Rodriguez, C. and Schepers, G. and Boorsma, K. and Sanderse, B. Assessment of sensitivity and accuracy of BEM-based aeroelastic models on wind turbine load predictions Journal of Physics: Conference Series, September 2020, DOI 10.1088/1742-6596/1618/4/04201
  • Schepers, J.G. Pragmatic Models: BEM with Engineering Add-Ons, Handbook of Wind Energy Aerodynamics, edited by Stoevesandt B, Schepers J.G., Fuglsang P and Yuping, S,
    Springer International Publishing, 2021,
    ISBN="978-3-030-05455-7, DOI 10.1007/978-3-030-05455-7_19-1, https://doi.org/10.1007/978-3-030-05455-7_19-1
  • Frederik Berger David Onnen, Gerard Schepers, and Martin Kühn Experimental analysis of radially resolved dynamic inflow effects due to pitch steps, wes-2021-70, 2021
  • Sanderse V. Dighe, K. Boorsma, G. Schepers Efficient Bayesian calibration of aerodynamic wind turbine models using surrogate modelling, Wind Energy Science 7, 759–781, 2022 https://doi.org/10.5194/wes-7-759-2022      
  • Stoevesandt B, Schepers J.G. , Fuglsang P and Yuping, S Schepers, J.G. The Issue of Aerodynamics in Wind Energy Handbook of Wind Energy Aerodynamics, edited by Stoevesandt B, Schepers J.G., Fuglsang P and Yuping, S, Springer International Publishing, 2021, ISBN="978-3-030-05455-7, DOI 10.1007/978-3-030-05455-7_19-1, https://doi.org/10.1007/978-3-030-05455-7_19-1
  • Koen Boorsma, Gerard Schepers, Helge Aagard Madsen, Georg Pirrung, Niels Sørensen, Galih Bangga, Manfred Imiela, Christian Grinderslev, Alexander Meyer Forsting, Wen Zhong Shen, Alessandro Croce, Stefano Cacciola, Alois Peter Schaffarczyk, Brandon Lobo, Frederic Blondel, Philippe Gilbert, Ronan Boisard, Leo Höning, Luca Greco, Claudio Testa, Emmanuel Branlard, Jason Jonkman, and Ganesh Vijayakumar
    Progress in validation of rotor aerodynamic codes using field data
    Wind Energy Science Discuss., https://doi.org/10.5194/wes-2022-51, 2022, Preprint
  • Alessandro Bianchini, Galih Bangga, Ian Baring-Gould, Alessandro Croce, José Ignacio Cruz, Rick Damiani, Gareth Erfort, Carlos Simao Ferreira, David Infield, Christian Navid Nayeri, George Pechlivanoglou, Mark Runacres, Gerard Schepers, Brent Summerville, David Wood, and Alice Orrell

Current status and grand challenges for small wind turbine technology

Wind Energy Science Discuss., https://doi.org/10.5194/wes-2022-34, 2022, Preprint

  • Kisorthman Vimalakanthan, Harald van der Mijle Meijer, Iana Bakhmet, and Gerard Schepers, CFD modelling of actual eroded wind turbine Wind Energy Science Discuss., https://doi.org/10.5194/wes-2022-65, 2022 Preprint
  • Berger, F., Neuhaus, L., Onnen, D., Hölling, M., Schepers, G., and Kühn, M.: Experimental analysis of the dynamic inflow effect due to coherent gusts, Wind Energ. Sci. Discuss. https://doi.org/10.5194/wes-2022-2, 2022.
  • C. Hur, C, Ferreira, G. Schepers, Applicability of dynamic inflow models in yaw, Journal Energies, 2034848, October 2022

 

 

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