Title of article
Predictionofflow-inducedexcitationinapipeconveyingfluidOriginalResearchArticle
Author/Authors
JyotiK.Sinha، نويسنده , , A.RamaRao، نويسنده , , R.K.Sinha، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
10
From page
627
To page
636
Abstract
Experimentallyitisevidentthatthenatureoftheflow-inducedexcitationinapipeconveyingfluidisabroadbandfrequencyexcitation.Itisalsoobservedthattheamplitudeofexcitationdecreaseswithincreaseinfrequency.However,thereisnomethodtoestimatesuchforces.Themeasurementofexcitationforceallalongthelengthofapipeusingthepressuretransducersmaybedifficultorperhapsimpossible.Anotherpossibilityistomeasurethestructuralresponsesusingvibrationtransducersallalongthepipelengthandthenestimatetheflow-inducedexcitationforces(bothamplitudeandphase)usingafiniteelement(FE)modelofthepipe.However,themeasureddegreeoffreedoms(dofs)arealwaysmuchsmallerthanthedofsinFEmodel,henceamethodhasbeendevelopedthatusesnon-linearoptimizationmethodinvolvingthelimitedmeasuredresponsestogetherwithFEmodeltopredicttheexcitationforces(bothamplitudeandphase)actingallalongthepipeconveyingfluid.Thepredictedexcitationforcescanthenbeusedtoperformsafetyrelatedstudybyassessingthepiperesponsesatanylocationwhetheraccessibleornot.Thetheoryoftheproposedmethodanditsvalidationhasbeenpresentedinthepaperthroughalongstraightpipeconveyingfluid.Typicalapplicationsoftheproposedmethodarealsodiscussed.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
894874
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