Pharwen
Aero-Servo-Elastic Coupling
I led the development of an aero-servo-elastic software able to simulate realistically the operations of offshore wind turbines in operation, at standstill, with faults and under normal and extreme conditions. It couples a 3D vortex panel method to an in-house beam-element model and a controller. The software was extensively validated with field measurements on Nenuphar large-scale prototypes.
Dynamic Stall
Aerodynamics of Vertical-Axis Wind Turbines (VAWTs) is highly unsteady and therefore much more complex than for Horizontal-Axis Wind Turbines. To accurately compute loads and power for VAWTs, my team and I coupled a Beddoes-Leishman dynamic stall model to a 3D vortex panel method. We validated this approach with CFD simulations, wind tunnel tests and field measurements.
Rigid-body motions
One of Pharwen's specificity lies in its ability to take into account the unsteady aerodynamics and inertial loads generated by the rigid-body motions of a floating substructure. The experimental validation was carried out thanks to results obtained within the MOQUA project where a 3mx3m rotor was intalled on a 6DOF robot (hexapod).
Publications
Dupont, M., Pitance, D., Kluczewska-Bordier, J., Immas, A., Silvert, F., & Deglaire, P (2017). Experimental validation of Pharwen code using data from VAWT wind tunnel tests with imposed motions. Proceedings of WindEurope.
Pitance, D., Horb, S., Kluczewska-Bordier, J., Immas, A., Silvert, F., & Deglaire, P. (2016). Experimental validation of Pharwen code using data from Vertical-axis wind turbines. Proceedings of WindEurope.
Venet, G., Immas, A., Fuchs, R., Parneix, N., Silvert, F., Masson, A., & Deglaire, P. (2016). Development and numerical validation of an aero-servo-elastic code for floating vertical-axis wind turbines. Proceedings of Euromech (Vol. 583).
Immas, A., Kluczewska-Bordier, J., Beneditti, P., Pitance, D., Horb, S., Parneix, N., ... & Angelou, N.(2015). Study of large-scale vertical axis wind turbine wake through numerical modeling and full-scale experiments. Proceedings of the EWEA.
Selected Talks
Speaker at the Renewable Power workshop (UC Berkeley, 2015)
Speaker at the Aerodynamic loads: numerical and experimental methods workshop (First scientific meeting for floating offshore wind, 2014)
