管軸と垂直な軸のまわりに回転する長方形管内の層流強制対流熱伝達 : 第2毅,縦横比0.2,0.5,2および5の長方形管の場合の数値解析

概要

論文の詳細を見る
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Numerical analysis is conduced on the forced convection heat transfer in rectangular ducts with aspect ratios 0.2, 0.5, 2.0 and 5,0, rotating at a constant angular velocity about an axis perpendicular to its axis. Navier-Stokes and energy equations are solved by a finite-difference method in the fully developed region of laminar flow. Velocity and temperature fields are obtained for various rotation rates and Reynolds numbers at each aspect ratio of the duct. A double-vortex secondary flow appears at low to moderate rotation rates. An additional pair of vortices appeared and disappeared for a higher range of Reynolds numbers due to aspect ratios of the ducts. The friction factor and Nusselt number are influenced by the Coriolis force and aspect ratio. Numerical results of the friction factor for aspect ratios equal to 0.5 and 2.0 are in good agreement with experimental results by other researchers.
一般社団法人日本機械学会の論文
1986-12-25