篮球竞彩胜负 :CIMSՓĵ

򾺲 www.fasfz.com  

Free-surface waves and far wakes generated by a floating body in a viscous fluid

ע⣺Փ. Journal of Hydrodynamics, Ser. B, Vol. 15, No. 4, pp.10-16. Aug. 2003.l
ʹՈעՓij̎

Lu Dong-qiang[R|].
Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
Shanghai institute of Applied Mathematics and Mechanics, Shanghai University, Shagnhai, 200072, China 

Abstract: The free-surface waves and the flow field due to a body moving on the surface of an incompressible viscous fluid of infinite depth were studied analytically. The floating body was modeled as a normal point pressure on the free surface. Based on the Oseen approximation for governing equations and the linearity assumption for boundary conditions, the exact solutions in integral form for the free-surface elevation, the velocities and the pressure were given. By employing Lighthill's two-stage scheme, the asymptotic representations in far field for large Reynolds numbers were derived explicitly. The effect of viscosity on the wave profiles was expressed by an exponential decay factor, which removes the singular behavior predicted by the potential theory.
Keywords: free-surface waves, velocity distribution, floating body, viscosity, asymptotic representation, Lighthill's two-stage scheme

1g[PDFʽȫҪʹܛAbode Acrobat(ܛ^󲢳Ҋ,վṩd)

2dՓȫՈc(958KB)
1V|Rd
2MṩĸMgd


վ䛵ıߵՓģ

1Hamiltonian Formulation of Nonlinear Water Waves in a Two-Fluid System

2ǾˮHamiltonϵyՓcоMչ

3Poisson ̖xµğoFSLie

4INTERACTION OF VISCOUS WAKES WITH A FREE SURFACE

PՓՈcվ<<<վȫ>>>

  

gӭӑՓlՓļоIĿ
(Ոڰlԕrژ}ʹcuՓĵ}Ŀо@ӷҞg[)

| CIMSՓ | й | ̓M | | Փ | Ŀ_l | WgYԴ | վȫ | MՓľWվȫ |

line.gif (4535 ֹ)

˸õĞҷgӭӱվͶƱ{

򾺲 Ոc

վ򾺲 gӭL

ע⣺վδSDd

All rights reserved, all contents copyright 2000-2019
վ20003¿WL