ポンプ吸込水槽内の水中渦芯における気泡集合の解析

抄録

A pump intake model study is required in case of the intake geometry deviating from the ideal ones. Criteria of submerged vortices in model test based on TSJ Standard are to check the existence of air core or bubbles entrained into suction bell inlet. The visible air core or bubbles are considered as incipient cavitation mixing water vapor and air bubble dissolved in water. The purpose of this paper is to verify the aggregation phenomenon of air bubbles to submerged vortices. Steady and transient numerical analysis was done using SST and LES model. The submerged vortex visualized by air bubble void fraction is located similar to measured result.