ポンプ機場における自由液面および混相流数値解析技術の開発

概要

論文の詳細を見る
The purpose of the present study is to develop a numerical tool for free surface flow and multi-phase flow problems in pumping stations. The benchmark experiments of sedimentation and bubble entrainment in a suction channel of a pump station were carried out. Predicted velocity profiles under free surface using SP-VOF (Simplified Piecewise Linear Interface Calculation and Volume of Fluid) method were in good agreement with experiments. Predictions of sedimentation area agreed well with experimental data taking particle size distribution, drag force and buoyancy into consideration. Bubble entrainment occurs at a junction of open and closed channel sections. Small scale tests of air entrainment were calculated and the critical velocity of incipient air entrainment was well calculated. The present numerical tool was able to treat key free surface and multi-phase flow phenomena in pumping stations.
ターボ機械協会の論文
2006-06-10