Numericalanalysisforwaterentryofwedgesbasedon

acomplexvariableboundaryelementmethod

WANG Yong-hu; WEI Zhao-yu

doi:10.11883/1001-1455(2012)01-0055-06

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WANG Yong-hu, WEI Zhao-yu. Numericalanalysisforwaterentryofwedgesbasedonacomplexvariableboundaryelementmethod[J]. Explosion And Shock Waves, 2012, 32(1): 55-60. doi: 10.11883/1001-1455(2012)01-0055-06

Citation:

WANG Yong-hu, WEI Zhao-yu. Numericalanalysisforwaterentryofwedgesbasedon acomplexvariableboundaryelementmethod[J]. Explosion And Shock Waves, 2012, 32(1): 55-60. doi: 10.11883/1001-1455(2012)01-0055-06

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Numericalanalysisforwaterentryofwedgesbasedon acomplexvariableboundaryelementmethod

doi: 10.11883/1001-1455(2012)01-0055-06

WANG Yong-hu^,,
WEI Zhao-yu

1.
CivilAviationFlightUniversityofChina,Guanghan618307,Sichuan,China;
2.
Schoolof MarineEngineering,NorthwesternPolytechnicalUniversity,

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Corresponding author: WANG Yong-hu
Publish Date: 2012-01-25

Abstract

Abstract

Thewaterentryproblemofthe2-D wedgewithaconstantspeedisnumericallyanalyzed basedonthevelocitypotentialtheory.Anewjetlinearapproximationmethodisincorporatedintothe complexvariableboundaryelementsolverthatdescribesthejetgeneratedbythewaterentryofwedgestonearlysimulatethefreesurfaceshape, jetandpressuredistributionalongthewettedareaofthe wedgecontour.AndthesametimeCauchyintegraltheoremisusedastheintegrationequation,and thesimilaritysolutionastheinitialcondition.Someimportantnumericaltechniquesarediscussedin detailsuchastimemarchingsolution,jettreatment,gridmeshgenerationandthefreesurfacedeformationupdating. Finally,thepressuredistributionandwaveelevationforthewedgeswithdifferentdeadriseanglesaregotten. Theproposedmethodisvalidatedthroughcomparisonswiththesimilaritysolutionandgoodapproximationsarefound.
- fluidmechanics,
- complexboundaryelementmethod,
- waterentryimpact\wedge,
- jetlinearapproximation,