Drag increment of internal waves generated by horizontally moving spheroid in supercritical regime

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2008,（2）
• 页码范围: 127-132
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s10409-008-0145-2

摘要

A theory on the drag increment of internal waves with a spheroid moving horizontally at a high velocity (or forlarge internal Froude number) in uniformly vertically strat-ified fluid (or ocean) is presented in the present paper. A surface source distribution is employed to model a hydro-dynamic interaction between the spheroid and the stratified fluid. From theoretical results, it is shown that there exists an asymptote of zero-drag increment in supercritical regimes,where internal Froude numbers are larger than the critical internal Froude numbers. When the spheroid reduces to a sphere, the results in this paper is in good agreement with the previous theoretical and experimental results of the sphere.