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1報, 低回転比における乱流統計量)

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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 simulations (DNS) of the fully developed axially rotating turbulent pipe flow was carried out. The Reynolds number, which is based on bulk velocity U_b and pipe diameter D, was set to be 5 286, while rotating rates N=u_<φ|ω>/U_b were 0.25, 0.30 and 0.35. The Statistics obtained were the mean flow, the root-mean-square value of the fluctuating velocities, and the anisotropy invariant. It was found that the friction coefficient decreased with the rotation rate increase. Detailed distribution of the turbulent kinetic energy and Reynolds stress budgets are also presented.
一般社団法人日本機械学会の論文
1999-05-25