Large Eddy Simulation and investigation on the flow structure of the cascading cavitation shedding regime around 3D twisted hydrofoil

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• 作者：Ying Chen^a ; ^b ; ^{cyofjs@sjtu.edu.cn} ; Xin Chen^a ; ^b ; Jie Li^a ; ^b ; Zhaoxin Gong^a ; ^b ; Chuanjing Lu^a ; ^b
• 关键词：Cavitation ; Hydrofoil ; Numerical simulation ; LES ; Flow structure
• 刊名：Ocean Engineering
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：1-19
• 全文大小：5748 K
• 卷排序：129

文摘

Cascading shedding regime of cavitation on 3D hydrofoil is investigated using LES. Cavity shape evolution and interlaced vortex structure of experiment were computed. Interaction of re-entrant and side-entrant jets causes convex and cascading cavity. Double peaks of lift or drag are caused by cavity break-up and ultimate collapse. Relation of cavity size change and pressure disturbance is analytically clarified.