自軸回転を有する円管内乱流の直接数値シミュレーション : (第2報, 低回転比における乱流熱伝達)

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rights: 本文データは社団法人日本機械学会の許諾に基づきCiNiiから複製したものであるA direct numerical simulation (DNS) with turbulent transport of a scalar quantity was performed for fully-developed turbulent rotating pipe flows. In this paper, the Reynolds number, which is based on bulk velocity and pipe diameter, was constant ; Re_b=5293, and the rotation ratio of a wall velocity to a bulk velocity were set to be 0.25, 0.3 and 0.35. A uniform heat-flux was applied to the wall as a thermal boundary condition. Prandtl number of the working fluid was 0.71. The turbulent statistics such as the mean temperature, temperature fluctuations, and scalar flux distribution were obtained. The turbulent heat transfer decreases with the rotating ratio increase. Moreover, the scalar-flux budgets were also obtained for each rotation ratio.
一般社団法人日本機械学会の論文
1999-05-25