壁面近傍を上昇する単一非球形気泡に働く横方向力(流体工学,流体機械)

概要

論文の詳細を見る
Lateral migration of a deformed single bubble rising in the vicinity of a vertical flat plate was measured to evaluate a wall force acting on the bubble. Experimental results indicated that a wall force coefficient C_W is a function of the bubble Reynolds number Re and Morton number M under the condition of low bubble Reynolds number, whereas it is a function of the Eotvos number E_O for high bubble Reynolds number condition. Empirical correlations of C_W were deduced from the experimental results. It was confirmed that the wall force model proposed by one ,of the authors and the proposed correlations of C_W are applicable for the bubbles under the condition of -6.0≤log_<10>M≤-2.5, 2.0≤E_O≤10.0 and 0.4≤Re≤65, and have a potential for the application to a bubble in an air-water system, provided that the bubble does not collide with the wall.
社団法人日本機械学会の論文
2003-10-25