轴对称体在水下狭窄管内运动时的粘性阻塞效应  

Viscous Blockage Effects on Axisymmetric Body Moving in Narrow-bore Duct under Water

作　　者：刘增荣[1] 

机构地区：[1]华中理工大学船舶和海洋工程系

出　　处：《华中理工大学学报》1989年第1期85-90,共6页Journal of Huazhong University of Science and Technology

摘　　要：本文以轴对称体势流压力分布为基础,用解析法考虑轴对称体在水下狭窄管内运动时流体粘性阻塞效应对流动的影响,导出了对势流计算结果中压力系数的修正公式,从而可计算轴对称体在水下狭窄管内运动时的压力系数。本文提出的方法可用于轴对称水下航行体管内发射研究。There exist two kinds of blockage effects on an axisymmetric body moving in a narrow-bore duct under water. The first kind is one caused by solid wall, and the second kind is one caused by fluid viscosity. Correction formulas for pressure coefficient are derived based on the results of potential flow computation, with the second blockage effect taken into account. An example is given. The results show that the second blockage effect should be taken into account.

关 键 词：轴对称体 阻塞效应 水 流体粘性 

分 类 号：U661.311[交通运输工程—船舶及航道工程]