INERTIAL EFFECTS IN SMALL-AMPLITUDE SWIMMING OF A FINITE BODY

被引：32

作者：

FELDERHOF, BU ^{[1
]}

JONES, RB ^{[1
]}

机构：

[1] QUEEN MARY & WESTFIELD COLL,DEPT PHYS,LONDON E1 4NS,ENGLAND

来源：

PHYSICA A | 1994年 / 202卷 / 1-2期

关键词：

D O I：

10.1016/0378-4371(94)90169-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the mechanism of small-amplitude swimming of a deformable body of finite size in a viscous incompressible fluid described by the Navier-Stokes equations. The theory is based on a perturbation expansion in powers of the amplitude of surface displacements. A nonvanishing swimming velocity is found in second order perturbation theory. The average motion may include both a translational and a rotational contribution. For harmonic time variation of the first order flow we are led to a natural definition of the efficiency of swimming.

引用

页码：94 / 118

页数：25

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