乱流境界層中の大規模渦構造の解明 : 第2報,大規模渦まわりのレイノルズ応力分布

概要

論文の詳細を見る
Contour maps of induced shear stress were three-dimensionally demonstrated about a large-scale horseshoe vortex artificially induced in a fully developed turbulent boundary layer. Two kinds of shear stress components were induced in the horseshoe vortex : the shear stress inherent to the coherent fluid motion and that generated through the interaction between the coherent motion and background turbulence. More than 70% of the induced shear stress was concentrated about the symmetry plane of the horseshoe vortex corresponding to the strong ejection, where the coherent component acted a dominant role. In the outer side of the legs of the vortex, the sweep motion induced the negative shear stress, to which the interaction component contributed most.
社団法人日本機械学会の論文
1989-08-25