乱流はく離泡における逆流の変動特性と熱伝達促進機構に関する一考察

概要

論文の詳細を見る
Longitudinal velocity fluctuations in the reverse-flow of a separation bubble formed at the leading edge of a blunt flat plate are found to be approximated by a Gaussian distribution. The reverse-flow intermittency I_r is thus represented by the error function of the time-mean value of the local longitudinal velocity divided by its r.m.s. value: the distribution of I_r near the plate is also expressed by the same function of the longitudinal distance relative to the time-mean reattachment point. The frequency of switching of flow directions is uniquely related to I_r. A high heat-transfer rate in the reattaching zone is suggested to be caused by a more frequent renewal of viscous sublayers there than in a more downstream region.
一般社団法人日本機械学会の論文
1984-10-25