ansys cfd管道流体分析经典算例 fluid

《ansys cfd管道流体分析经典算例 fluid》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、Fluid#2:VelocityanalysisoffluidflowinachannelUSINGFLOTRAN Introduction: InthisexampleyouwillmodelfluidflowinachannelPhysicalProblem: Computeandplotthevelocitydistributionwithintheelbow.Assumethattheflowisuniformatboththeinletandtheoutletsectionsandthattheelbowhasuniformde

2、pth.ProblemDescription: ThechannelhasdimensionsasshowninthefigureTheflowvelocityastheinletis10cm/sUsethecontinuityequationtocomputetheflowvelocityatexitObjective:ToplotthevelocityprofileinthechannelToplotthevelocityprofileacrosstheelbowYouarerequiredtohandinprintoutsforth

3、eaboveFigure:IMPORTANT:ConvertalldimensionsandforcesintoSIunits STARTINGANSYS          ClickonANSYS6.1intheprogramsmenu.SelectInteractive.Thefollowingmenucomesup.Entertheworkingdirectory.Allyourfileswillbestoredinthisdirectory.AlsounderUseDefaultMemoryModelmakesurethevalu

4、es64forTotalWorkspace,and32forDatabaseareentered. TochangethesevaluesunclickUseDefaultMemoryModel MODELINGTHESTRUCTURE GototheANSYSUtilityMenu(thetopbar)ClickWorkplane>WPSettings…Thefollowingwindowcomesup:  o       ChecktheCartesianandGridOnlybuttonso       Enterthevalues

5、showninthefigureabove ·        GototheANSYSMainMenu(onthelefthandsideofthescreen)andclickPreprocessor>Modeling>Create>Keypoints>OnWorkingPlaneCreatekeypointscorrespondingtotheverticesinthefigure.Thekeypointslooklikebelow.Nowcreatelinesjoiningthesekeypoints.Modeling>Create

6、>Lines>Lines>StraightlineThemodellooksliketheonebelow.  NowcreatefilletsbetweenlinesL4-L5andL1-L2.ClickModeling>Create>Lines>LineFillet. Apop-upwindowwillnowappear. Selectlines4and5. ClickOK. Thefollowingwindowwillappear: Thiswindowassignsthefilletradius. Setthisvalueto0.

7、1m.RepeatthisprocessoffilletingforLines1and2.Themodelshouldlooklikethisnow: Nowmakeanareaenclosedbytheselines.Modeling>Create>Areas>Arbitrary>ByLinesSelectallthelinesandclickOK.Themodellookslikethefollowing Themodelingoftheproblemisdone. ELEMENTPROPERTIES SELECTINGELEMENT

8、TYPE:·        ClickPreprocessor>ElementType>Add/Edit/Delete...Inthe'ElementTypes'windowthatopens