Loading...

Experimental Investigation of Aerodynamic Performance Enhancement by Trailing Edge Active Flow Control Using Plasma Actuator

Mohaghegh Kojidi, Mohammad Javad | 2018

503 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51601 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Ebrahimi, Abbas
  7. Abstract:
  8. Flow control means changing the optimal flow behavior of the fluid in accordance with the desired targets, such as decreasing drag force, increasing the lift force or lift to drag ration, as well as manipulating the separation of the flow from the surface. So far, little research has been done on increasing the airflow performance through the active control of the trailing edge flow. Gurney flap is a great tool, and its experimental results show a significant increase lift force in the airfoil. In this study, it is possible experimentally to use plasma actuators to create microtap and garney flap artificial for enhancing the aerodynamic performance of airfoil by controlling the flow field at the trailing edge. A plasma actuator consists of two electrodes and a dielectric layer. The high difference between the two electrodes causes the ionization of air between the electrodes and, as a result, creates a jet in the vicinity of the surface. The most important advantage of the plasma actuator compared to other flow control methods can be simply, having different frequencies, fast response times for unstable methods, low weight, and the ability to install on different geometries. In this research, we investigate by choosing different test scenarios, in terms of configuration, actuator position, actuator number, and improved aerodynamic performance of airfoil. The test airfoil in this study is NACA 0015 and experiments in the Reynolds flow regime are about 70000 and at angles of attack of 2 to 10 degrees. In different modes, the static pressure on the airfoil surface is measured to evaluate aerodynamic performance
  9. Keywords:
  10. Flow Control ; Plasma Actuator ; Gurney Flap ; Microtap ; NACA 0015 Ainfoil

 Digital Object List

 Bookmark

No TOC