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Article: Numerical study of nonlinear shallow water waves produced by a submerged moving disturbance in viscous flow

TitleNumerical study of nonlinear shallow water waves produced by a submerged moving disturbance in viscous flow
Authors
KeywordsPhysics
Issue Date1996
PublisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phf
Citation
Physics of Fluids, 1996, v. 8 n. 1, p. 147-155 How to Cite?
AbstractTwo-dimensional solitary waves generated by a submerged body moving near the critical speed in a shallow water channel are studied numerically. The incompressible Navier–Stokes equations in a curvilinear free-surface-fitted coordinate system are solved by the finite difference method. The present numerical results are compared with the existing experimental data, and with the numerical solutions of two inviscid-flow models, i.e. the general Boussinesq equation and the forced Korteweg-de Vries equation. It is found that the viscous effect in the boundary layer around the body and on the bottom of the channel plays an important role in the generation of solitary waves on the free surface. Hence the Navier–Stokes solutions have a better agreement with the experimental data than those obtained from two inviscid-flow models. The effect of the submergence depth of the body on the waves generated is also investigated. It reveals that waves are insensitive to the submergence depth of the body, except for a small region quite close to the bottom of the water channel. ©1996 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/42130
ISSN
2015 Impact Factor: 2.017
2015 SCImago Journal Rankings: 1.036
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Den_HK
dc.contributor.authorChwang, ATYen_HK
dc.date.accessioned2007-01-08T02:29:50Z-
dc.date.available2007-01-08T02:29:50Z-
dc.date.issued1996en_HK
dc.identifier.citationPhysics of Fluids, 1996, v. 8 n. 1, p. 147-155en_HK
dc.identifier.issn1070-6631en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42130-
dc.description.abstractTwo-dimensional solitary waves generated by a submerged body moving near the critical speed in a shallow water channel are studied numerically. The incompressible Navier–Stokes equations in a curvilinear free-surface-fitted coordinate system are solved by the finite difference method. The present numerical results are compared with the existing experimental data, and with the numerical solutions of two inviscid-flow models, i.e. the general Boussinesq equation and the forced Korteweg-de Vries equation. It is found that the viscous effect in the boundary layer around the body and on the bottom of the channel plays an important role in the generation of solitary waves on the free surface. Hence the Navier–Stokes solutions have a better agreement with the experimental data than those obtained from two inviscid-flow models. The effect of the submergence depth of the body on the waves generated is also investigated. It reveals that waves are insensitive to the submergence depth of the body, except for a small region quite close to the bottom of the water channel. ©1996 American Institute of Physics.en_HK
dc.format.extent185404 bytes-
dc.format.extent3856 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phfen_HK
dc.rightsPhysics of Fluids. Copyright © American Institute of Physics.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleNumerical study of nonlinear shallow water waves produced by a submerged moving disturbance in viscous flowen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1070-6631&volume=8&issue=1&spage=147&epage=155&date=1996&atitle=Numerical+study+of+nonlinear+shallow+water+waves+produced+by+a+submerged+moving+disturbance+in+viscous+flowen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.868822en_HK
dc.identifier.hkuros13671-
dc.identifier.isiWOS:A1996TL89200015-

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