AM06-03-001 圧縮性一様等方性乱流におけるコヒーレント微細渦の特性(乱流渦構造(1),一般講演)

概要

論文の詳細を見る
Direct Numerical Simulations of decaying compressible isotropic turbulence are conducted to investigate the fine scale structure and those relations with sound generation from turbulence. The characteristics of the coherent fine scale structure in compressible turbulence coincide with those in incompressible turbulence except for density and pressure around the eddy. Since density, pressure and dilatation distributions around the eddy are closely related with the elliptic feature of the coherent fine scale eddy, the coherent fine scale eddy plays important role in the sound generation from turbulence. The Reynolds term of Lighthill's sound source shows a large negative peak at the center of the eddy and the entropy term show three peaks around the eddy.
日本流体力学会の論文
2006-09-05