AM06-021-007 はく離乱流のスカラー拡散に関するLES(乱流熱物質移動(2),一般講演)

概要

論文の詳細を見る
Large eddy simulation was performed for lateral transport of scalar in a backward-facing step flow. Inlet profile is assumed to be fully developed turbulent channel flow having spanwise non-uniformity of mean temperature. Reynolds number based on center velocity and step height is set at 6,640, and Prandtl number at 0.71. Numerical validity was confirmed through comparison between numerical data and PTV measurement by Kasagi et al. Spanwise eddy diffusivity of heat was consistent with spanwise component of velocity fluctuation which corresponds to production of heat flux. However, temperature fluctuation intensity was abnormally large near the back surface of step, and it is suggested that temperature fluctuation is sustained by flow circulation.
日本流体力学会の論文
2006-09-05