二維湍流流場數(shù)值模擬方法的研究.pdf

1、靄矗量≯萋蟲凄碩士學(xué)位論文(學(xué)位研究生)題目：三維濫逋逋揚數(shù)值槿擬友法的硒究作者周絲監(jiān)指導(dǎo)教師蘇莫明專業(yè)技術(shù)職務(wù)教授學(xué)科(專業(yè))速堡扭趟叢王堡二零零七年三月西北hjk人學(xué)碩十學(xué)位論文AbstraclAbstractTbimprovenumericalcomputationtechniqueforintemalnowofcascadeandmakepreparationstosimulatethecomplexnowofturbomach

2、inery，severalimponantproblemsareinvestigatedint11ispapeLAn啪ericalmethod，wheremepressureisusedasaprimarydependentv撕able，ispreselltedfor血esolutionofthetwo—dimensionalsteadyNavierStokesequationingeneralcurvilinearcoordinate

3、sSIMPLE(Semi—Implic“MethodforPressllreLinkedEquations)ismajnlyadoptedAcomputationalprocedurehasbeendevelopedforcomputing2dimensionturbulentnowTheprocedureisbasedonmefullyconservative，structured行nitevol啪efmnework，withinwb

4、ichthegridsarenonstaggeredandc01locatedsuchⅡ1ata11nowV捌abIesareStoredatthes鋤esetofnodesForsuppressingthepressureosciIIationswhileusingnon—staggeredgridarrangemem，tllemomentuminterpolationmethod，pr叩osedbyRhieandChow，iscon

5、ductedTherealizable五一占modelwhichhaswiderapplicabilityisutilizedtodescribethetwbulemnowprocess，thewallfunctionmethodisadoptedfordealingwiththeboundaryconditionatthestandingwallConsideringthecomputationalprecision，thehighr

6、esolutionschemeQUICK，CUIandMUSCLscheme、ⅣithTVDcharacte“sticareemployedtodiscretizetheconVectiVe仃ansporttermsAlloftheseschemesareimpkmentedbyanadditionalsourcebasedonthenrst—orderupstreamschemeBasedontheaboVeresearch，anum

7、ericalsimulationsystemisdeVelopedtocalculatetheinco瑚pressibleandcompressibleturbulemnowofcascadeandotllertypicaIcalculationalexamplesTheagreementbetweenmecalculatednumericalfesultsa11dexpefimentaldataorotbernumericalfesu