A NOTE ON THE HISTORY FORCE ON A SPHERICAL BUBBLE AT FINITE REYNOLDS-NUMBER

被引:224
|
作者
MEI, RW
KLAUSNER, JF
LAWRENCE, CJ
机构
[1] UNIV FLORIDA,DEPT MECH ENGN,GAINESVILLE,FL 32611
[2] UNIV ILLINOIS,DEPT THEORET & APPL MECH,URBANA,IL 61801
关键词
D O I
10.1063/1.868039
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
An approximate expression for the history force on a spherical bubble is proposed for finite Reynolds number, Re. At small time, the history-force kernel is a constant, which decreases with increasing Re, and the kernel decays as t-2 for large time. For an impulsively started flow over a bubble, accurate finite difference results show that the history force on the bubble decays as t-2 at large time. Satisfactory agreement is observed between the presently proposed history force and the numerical solution.
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页码:418 / 420
页数:3
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