クエット・ポアズイユ形乱流の乱れ統計量 : 第1報, 乱れ強さ

概要

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Turbulence intensities in Couette・Poiseuille flow, developed between stationary and moving walls, have been measured by I-and X-type hot wires. The intensities in the wall region are affected by non-dimensional shear stress gradient parameter μ (≡u^3_*/av), but not by Reynolds number Re^* (≡hu_*/v). As|μ|decreases, distributions of streamwise and wall-normal turbulence intensities shift upward or downward from those of plane-Couette flow depending on the sign of μ. In the turbulent core region, turbulence intensities of Poiseuille-type flow distribute quite differently from that of Couette-type flow. The effective parameter in this region is β, but the effect of β on the turbulence intensities is obscured by the low Reynolds number effect.
社団法人日本機械学会の論文
1998-10-25