Volume 18, Issue 1 (2018)                   Modares Mechanical Engineering 2018, 18(1): 111-121 | Back to browse issues page

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Ahmadpour Roudsari M, Parhizkar H, Pouryoussefi G H, TARABI A. Numerical investigation of factors affecting in the steady and unsteady plasma actuators performance on the airflow through the flat plate. Modares Mechanical Engineering. 2018; 18 (1) :111-121
URL: http://journals.modares.ac.ir/article-15-2040-en.html
1- Aerospace Department, Malek Ashtar University of Technology, Tehran, Iran
2- Aerospace Department, K.N. Toosi University of Technology, Tehran, Iran
3- Malek -Ashtar University of Technology, Tehran, Iran
Abstract:   (1601 Views)
The ability to control the flow, is one of the basic needs of Fluid Mechanics that constantly pursued by researchers. One of the new methods in this area, is using Dielectric barrier discharge (DBD) plasma actuators that by injecting momentum into the boundary layer, causing a delay in the phenomenon separation. The main object in this work was to help to optimize the electrical parameters to obtain stranger vortex and more effective ionic wind created by steady and unsteady plasma actuators on the air through the flat plate. For this reason, simulation is done for a flat plate with the compressible 5 m/s velocity airflow. The time averaged velocity profiles of the ionic wind show that averaged velocity come more and the position of the maximum velocity come near the surface by increasing the excitation voltage and frequency. The power, of the vortices that are shed form the unsteady actuator, increases by increasing duty cycle percentage. Our results on the ionic wind velocity on different position on the flat plate indicate that the maximum averaged velocity occurs in downstream of plasma actuator.
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Article Type: Research Article | Subject: CFD
Received: 2017/09/5 | Accepted: 2017/11/30 | Published: 2018/01/5

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