A Study on the Basic Performance of Tornado-like Wind Simulator by PIV

Abstract

Damages by gusts such as tornados have increased, and preventive measures are urgently required. For that purpose, the basic characteristics of these gusts must be clarified.

Therefore, the tornado-like wind was reproduced by the tornado-like wind simulator and the three components of the wind speed were measured by the three-dimensional PIV. In this study, we reproduced tornado-like flows with different swirl ratios by changing the height between the floor and the inlet and angles of the guide vane, and then organized the relationship between the swirl ratio and the velocity distribution of the tornado-like flow. In addition, by moving the tornado device, the effect of the movement of the tornado on the tornado-like flow was clarified.