平行軸まわりに回転する長方形管内の流れと熱伝達

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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Fully developed steady laminar flow of viscous fluid in straight rectangular ducts rotating about a parallel axis is analyzed numerically. Thermal boundary condition of axially uniform wall heat flux is considered. Numerical results of flow and temperature field in ducts with aspect ratio from 0.2 to 5 are obtained for ReRa_Ω number upto 6.725×106 (for Re numbers upto 1346) and Prandtl number from 0.3 to 400. At low to moderate ReRa numbers, a double-vortex secondary flow is exist under the influence of buoyancy due to centrifugal force field. It is found that a pair of additional vortices appear and disappear for higher range of ReRa_Ω numbers. It is shown that tritical number of ReRa_Ω for onset of additional vortices is affected by Prandtl number and aspect ratio. The friction factor and Nusselt number are pressented. The solution is compared with other analyses.
一般社団法人日本機械学会の論文
1990-04-25