十字分岐管を含む配管系の流動に関する研究 : 第3報,流量変動現象の防止構造の検討

概要

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The stabilizing structure for the phenomenon where the flow rate of a loop with a cross pipe switches nonperiodically between a high level and a low level under certain flow conditions was analytically and experimentally investigated. By numerical analysis, a pair of vortices appeared downstream from the point where the axes of the main pipe and the side branches crossed. As the upstream vortex grew larger, it drifted further upstream and swirl flows with a high pressure loss resulted. Conversely, when the downstream vortex grew larger, the flow stage became nonswirling with a low pressure loss. Two methods for stabilizing nonswirling flow were confirmed by experimentation. One is the use of a flow diverter and the other is the removal of the region where vortices appear by narrowing the downstream area at the cross pipe.
社団法人日本機械学会の論文
1989-10-25