Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 11, 2020 - November 13, 2020
This study investigated the effect of longitudinal vortices arrangement on the turbulent diffusion. Interaction of longitudinal vortices may cause an increase in the diffusion effect. We used two vortex generators (VG). One is susceptible to interaction on longitudinal vortices and the other is not. VG was mounted on upstream of contraction of wind tunnel. Longitudinal vortices in the contraction area were stretched and the vorticity increased. CO2 gas was injected into wind tunnel from one point source. To evaluate diffusion, CO2 concentration was measured in the downstream region. As a result, the concentration distribution of CO2 in the downstream direction was clarified, and the difference in the turbulence diffusion effect of two VG was clarified.
