两种手姿态在不同攻角下划水的数值模拟  

Numerical simulation of swimming of two hand-figures at various angles of attack

作　　者：袁武[1] 康宏琳[1] 高瑞泽[1] 阎超[1] 林宏[2] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083 [2]国家体育总局体育科学研究院,北京100763

出　　处：《水动力学研究与进展（A辑）》2006年第3期369-373,共5页Chinese Journal of Hydrodynamics

摘　　要：该文旨在用计算流体力学(CFD)的方法研究游泳推进问题,建立了手掌和前臂的联接模型,并生成3D非结构网格,计算了两种不同手姿态:并拢和张开在不同来流速度和攻角下的推进阻力和推进升力,并结合计算结果进行了流场分析,研究了两种手姿态对推进效率的影响。结果表明,在各个攻角状态下,手并拢划水均能获得更高的推进效率。In order to study swim propulsive problem with the numerical technique of computational fluid dynamics （CFD）, 3D unstructured grid models were generated based on of swimmer＇s hand and forearm＇s model, two hand-figures-fingers splaying and fingers holding together, were calculated at various speeds and various angles for the drags and lifts, the flow fields around the hand and forearm were analyzed based on the calculated date. which showed the influence of hand-figures on swimming propulsive efficiency, The results show that swimming with fingers holding together provides higher propulsive efficiency than swimming with fingers splaying at various angles of attack.

关 键 词：计算流体力学 游泳 手姿态 推进效率 

分 类 号：G861.1[文化科学—体育训练]