乱流境界層中の大規模馬蹄形渦による乱れの生成

概要

論文の詳細を見る
The triple decomposition analysis derives three components of the production term from the turbulence energy equation : the mean production of coherent motion, the mean production of incoherent turbulence, and the coherent production of incoherent turbulence. The present experiment evaluated these terms around a large-scale coherent vortex in a fully developed turbulent boundary layer. These quantities were accumulated between the legs of the horseshoe vortex where the ejection occurred. The coherent motion was mainly produced through the stretching of the leg vortices caused by the mean velocity shear. The negative distribution of the mean production of incoherent turbulence shows that incoherent turbulence partly recovers the momentum of the mean flow deformed by the coherent motion of the vortex.
社団法人日本機械学会の論文
1993-02-25