ANSYSCFD管道流体分析算例Fluid11

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1、Fluid#3:AnalyzingFlowinaSystemofPipesUSINGFLOTRANIntroduction:Inthisexampleyouwillmodelasystemofpipesfilledwithwater.PhysicalProblem:Computeandplotthevelocitydistributioninthepipesystemshowninthefigure.ProblemDescription:•Theshapeofthepipegridisshowninthefigure.(Eachpointisspacede

2、venlyat0.33m)■Objective:□Toplotthevelocityprofilewithinthepipe.□Tographthevariationofvelocityoutthebottompipe・□Youarerequiredtohandinprintoutsfortheabove・□Fgure:STARTINGANSYS•ClickonANSYSintheprogramsmenu.•SelectInteractive.Thefollowingmenuthatcomesup.Entertheworkingdirectory.Ally

3、ourfileswillbestoredinthisdirectory.Alsoenter64forTotalWorkspaceand32forDatabase・QickonRun.MODELINGTHESTRUCTURE■GototheANSYSUtilityMenu□QickWorkplane>WPSettings□ThefollowingwindowcomesupChecktheCartesianandGridOnlybuttons•Enterthevaluesshowninthefigureabove・•GototheANSYSMainMenu•I

4、nthisproblemwewillmodelthepipegridandthenapplyfluid什owtoit・•OickPreprocessor>-Modeling->andcreatethepipegridasshownbelow.•Hint:YoucanusekeypointsandthencreatetheareaPOINTSTYPIMUMJUL17200311:33:42Themodelingoftheproblemisdone.ELEMENTPROPERTIESSELECTINGELEMENTTYPE:aickPreprocessor>E

5、lementType>Add/Edit/Delete...Inthe,ElementTypes*windowthatopensclickonAdd・••Thefollowingwindowopens:二CFDFlowPropertiesConstantvalue1000OKCancelHelp•Type1intheElementtyperefereneenumber.>ClickonFlotranCFDandselect2DFlotran141.ClickOK.Closethe'Elementtypes*window.>Sonowwehaveselecte

6、dBementtype1tobeaFlotranelement.Thecomporientwillnowbemodeledusingtheprinciplesoffluiddynamics・Thisfinishestheselectionofelementtype・DEFINETHEFLUIDPROPERTIES:>GotoPreprocessor>FlotranSetUp>FluidProperties・>Onthebox,shownbelow,makesurethefirsttwoinputfieldsreadConstant,andthenclick

7、onOK.Anotherboxwillappear.Fillinthevaluesasshownbelow,thenclickOK.DensitypropertytypeCONSTANTViscositypropertytypeCONSTANTConstantvalue・1:ImpliesconductivityneednotbesetConductivitypropertytypeCONSTANTConstantvalue二CFDFlowPropertiesConstantvalue1000OKCancelHelp•Type1intheElementty

8、perefereneenumber.>ClickonFlotran