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Aerodynamic Performance Improvement of Megawatt Wind Turbine Rotor Using Plasma Actuator

Movahhedi, Mohammad Reza | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49197 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Ebrahimi, Abbas
  7. Abstract:
  8. For validation of simulation, plasma actuator was modelled on a flat plate in quiescent flow, which is result in low-speed jet near the wall. The results were compared with similar model and were showed good agreement with them. After that, blade was modelled in three-dimensional manner with MRF technique and periodic method and the results were validated in clean situation (absence of plasma). In the following, turbine was analysed with a code, which was written in MATLAB software based on BEM method and the results were compared with present CFD simulation. Then, plasma actuator was used in chordwise in parts of the blade to improve wind turbine performance. Also it was used in spanwise near tip of the blade such that acts like a winglet. Results show that in all cases, using this actuator leads to improvement of velocity profile in controlled section, which influences on pressure distribution and results in lift increment. Finally, increasing in lift, leads to grows in produced torque and power of the wind turbine. The most increment in output power is occurred, when the actuator installed near root of blade in spanwise direction and before low-speed region in chordwise direction. Also was appeared that plasma actuator is not beneficial in use as winglet for this blade
  9. Keywords:
  10. Horizontal Axis Wind Turbine (HAWT) ; Winglets ; Fluent Software ; Dielectric-Barrier Discharge (DBD)Plasma Actuator ; Electrostatic Actuator ; Boundary Layer

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