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Study of angles of wedge effect on hydrodynamic characteristics of rear fin

LIU Hai-jun1,2,ZOU Zhen-zhu1(1.School of Astronautics,Harbin Institute of Technology,Harbin 150001,China;2.School of Astronautics,Shijiazhuang Railway Institute,Shijiazhuang 050043,China)  
The drag characteristics of wedges-shaped fin are effected by different attack angles,cavitation numbers and angles of wedge-shaped fin.The data are obtained by using FLUENT.The fin with rear body could provide higher efficiency at small cavitation number and angles of wedge-shaped fin.The obtained results show that curve of drag coefficient does not ascend at beginning,then ascends with the increased flow angle.
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