VORTEX INDUCED VIBRATIONS OF FINNED CYLINDERS-中国Betway体育网页登陆

摘要 ThisarticlepresentstheresultsofanumericalsimulationonthevortexinducedvibrationofvariousfinnedcylindersatlowReynoldsnumber.Thenon-dimensional,incompressibleNavier-Stokesequationsandcontinuityequationwereadoptedtosimulatethefluidaroundthecylinder.Thecylinder(withorwithoutfins)influidflowwasapproximatedasamass-springsystem.Thefluid-bodyinteractionofthecylinderwithfinsanduniformflowwasnumericallysimulatedbyapplyingthedisplacementandstressiterativecomputationonthefluid-bodyinterfaces.Bothvortexstructuresandresponseamplitudesofcylinderswithvariousarrangementsoffinswereanalyzedanddiscussed.TheremarkabledecreaseofresponseamplitudefortheadditionsofTriangle60finsandQuadrangle45finswasfoundtobecomparablewiththatofbarecylinder.However,theadditionsofTriangle00finsandQuadrangle00finsenhancetheresponseamplitudegreatly.Despitetheassumptionoftwo-dimensionallaminarflow,thepresentstudycangiveagoodinsightintothephenomenaofcylinderswithvariousarrangementsoffins.

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VORTEX INDUCED VIBRATIONS OF FINNED CYLINDERS

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