低Re数における二次元翼の後流不安定とエオルス音発生の数値シミュレーション(騒音(1),一般講演)

概要

論文の詳細を見る
Karman-vortex shedding induced by wake instability behind a 2-D airfoil is of interest at relatively low Reynolds numbers, to understand how a vortex street develops in the wake region in conjunction with an aeolian tone generation. In this study, we performed numerical simulations of a 2-D laminar flow past an NACA0012 airfoil. The computation was run on the simulation code being developed to predict an aero-acoustic problem by using a highly accurate numerical method. As a verification study, the results are compared with the experimental data obtained by our group, and also with an available numerical study. The detailed flow visualization is presented to understand the mechanism of the wake instability that results in vortex shedding.
2007-08-06