Paper 7. Unsteady Flow around a Slender Fish-Like Body

Author:

Wu Th. Y.1,Newman J. N.2

Affiliation:

1. California Institute of Technology, Pasadena, California 91109, U.S.A

2. Department of Ocean Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, U.S.A

Abstract

This paper attempts to extend some recent theoretical calculations on the unsteady flow generated by body movements of a slender ‘flat’ fish by further including the effect of finite body thickness in the consideration for various configurations of side and caudal fins as major appendages. Based on the slender-body approximation, the cross-flow is determined for different longitudinal body sections which are characterized by a variety of cross-sectional shapes and flow conditions (such as having smooth or fin-edged body contours, with or without vortex sheets alongside the body section). The effect of body thickness is found to arise primarily from its interaction with the vortex sheet already existing in the cross-flow. New results for the transverse hydro-dynamic force acting on the body are obtained, and their physical significances are discussed.

Publisher

SAGE Publications

Subject

General Engineering

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Fish Swimming and Bird/Insect Flight;Annual Review of Fluid Mechanics;2011-01-21

2. On theoretical modeling of aquatic and aerial animal locomotion;Advances in Applied Mechanics;2002

3. MECHANICS OF CILIARY LOCOMOTION;Biological Reviews;1974-02

4. The force on a slender fish-like body;Journal of Fluid Mechanics;1973-05-22

5. A generalized slender-body theory for fish-like forms;Journal of Fluid Mechanics;1973-03-06

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