Host: The Japan Society of Mechanical Engineers
Name : Mechanical Engineering Congress,Japan
Date : September 11, 2016 - September 14, 2016
The control of flow and aerodynamic noise around an automobile bonnet model with dielectric barrier discharged (DBD) plasma actuator (PA) was investigated, where the bonnet model consists of a curvilinear body with a kink shape. From a flow around this model, intense tonal noise radiates by fluid-acoustic interaction. The sound and velocity fields were measured with a low-noise wind tunnel. The experiments were performed for two streamwise positions of the PA, xpa /d = 0.12 and 0.50, with the co-flow and counter-flow with arrangements of the PA. As a result, the aerodynamic noise can be reduced by the control of the PA, at xpa/d = 0.12. When the PA was set at xpa/d = 0.12 with both arrangement of the PA. This is because the separation around the kink shape is suppressed and the vortices related with the tonal sound became weaker.
