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不同分层流体中内波对潜体作用力的比较
引用本文:姚金伟,蔡泽伟,徐永春.不同分层流体中内波对潜体作用力的比较[J].浙江大学学报(理学版),2010,37(3):362-366.
作者姓名:姚金伟  蔡泽伟  徐永春
作者单位:浙江工商职业技术学院,浙江,宁波,315012
基金项目:浙江省自然科学基金资助项目,宁波市自然科学基金资助项目,浙江省教育厅科学研究项目 
摘    要:利用边界元方法计算内波对潜体的一阶垂荡波浪力和一阶纵摇波浪力矩.针对两层流体和线性分层流体模式,计算分析了细长回转体受到内波的波浪荷载,得到了相应的经验公式,并与均匀流体的情况进行了比较.结果表明:在某些频率段上,两层流体中实际内波对潜体的波浪作用力要远大于均匀流体中近水表面波对其的影响;线性分层流体中考虑流体密度的分层效应对水下潜体运动姿态的影响是很重要的.

关 键 词:边界元方法  分层流体  内波  一阶波浪力(矩)

Research on force exerted by internal waves on underwater body in different stratified fluids
YAO Jin-wei,CAI Ze-wei,XU Yong-chun.Research on force exerted by internal waves on underwater body in different stratified fluids[J].Journal of Zhejiang University(Sciences Edition),2010,37(3):362-366.
Authors:YAO Jin-wei  CAI Ze-wei  XU Yong-chun
Institution:(Department of Zhejiang Business Technology Institute,Ningbo 315012,Zhejiang Province,China)
Abstract:First-order heaving force and pitching moment on underwater body are calculated by using the boundary element method.Two types of fluid(two-layer and linear stratified) were studied and some useful empirical formulas were obtained,which were compared with the case of a homogeneous fluid.The results show that over a certain range of frequencies the force in two-layer fluid are much larger than that in uniform fluid and the density stratification has large effects on underwater body in linear stratified fluid.
Keywords:boundary element method  stratified fluid  internal waves  first-order force(moment)
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