Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
Large-eddy simulations on pre-stall airfoil-flow control using spanwise type plasma actuator (SP-PA) and vortex-generator type plasma actuator (VG-PA) have been conducted. These simulations were carried out with a Reynolds number of 63,000 using a NACA0015 airfoil, set at an angle of attack of 4°. In this paper, we focus on examining the effect of the PA's installation length, installation method, and driving method on the control effectiveness. The simulation results show that using VG-PA promotes the transition to turbulence, which led to a reduction of the laminar separation bubble region and consequently lowered pressure drag. Although there is an observed increase in friction drag, the overall drag is reduced. This reduction in total drag leads to an improvement of lift-to-drag ratio.
