建筑結(jié)構(gòu)風(fēng)壓三維非定常分析的并行數(shù)值模擬研究.pdf

1、東南大學(xué)碩士學(xué)位論文建筑結(jié)構(gòu)風(fēng)壓三維非定常分析的并行數(shù)值模擬研究姓名：周月庭申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：呂令毅20061201東南大學(xué)碩士學(xué)位論文ABSTRACT啊Ue：3DNumericalsmulationofunsteadywindpI℃鼴umdistributionaroundbuildingsooparallelcomputingNameofGraduate：ZhouYuetingNameoftheSupervi

2、sorandtheTitle：ProfLULingyiNameofUniversity：SoutheastUniversityAbstract：Since20thcentury80thdecadestheresearchersoIlcomputationalwindengineeringbegintousecomputationalfluiddynamicsmethodtocalculatethehighturbulentflowfie

3、ldaroundthebluffbuildingsimmersedintheloweralmosphereboundarylayerbasedonairdynamicsResearchersinTongjiUniversityZhejiangUniversitySoutheastUniversityandsomeresearchinstitutedidalotofnumericalsimulationsofflowfieldaround

4、high—risebuildingsandlongspanbuildingsThenumericalsimulationarisesmoreandin01eattentionbyitsdistinctadvantage，itbecamemoreandnloreimportalltincomputationalwindengineeringTheworksonnumericalsimulationincomputationalwinden

5、gineeringmainlya∞thesteady—stagesimulationinhomeandabroadSincenowthenumericalsmulationofunsteadywindpressuredistributionaroundhighrisebuildingswhichisthehighReynoldsnumberproblemisnotreportedyetThenumericalsmulationofuns

6、teadywindpressuredistributionaroundlongspanbuildingswasjustbegunAlmostallvortexflowsateunsteadyinstrictdefinition，orweakcharacteristicinsomelevelsUnstcedyflowandVOlteXarethemostubiquitousmotiontypesinn咖I弓Studyonunsteadyf

7、lowismainlyonthechangephysicsprocessaccompanythetimeInunsteadyflowtheinstanhanconsstateoftheflowrelateswiththeboundaryconditionatthistime。alsowiththeinitialconditionandthebistoryoftheflowSoit’sn∞Tecomplexthanthesteadysta

8、teflowTherearemanyproblemsincomputationalwilldengineeringsuchasthevibrationofhighrisebuildingacrosswindthewindswafff扭intotheinnerroomofthebuildingwhentll虻doorsandwindowsbreakinstolTnweatherandtheinnerpressuregetsasuddeni

9、ncreaseThesephenomenacan’theexplainedbythesteadysimulationUnsteadysimulationiscarriedoutonsuchtwopracticalproblemsbased伽thePCclusterparallelcomputingtechnologyMostproblemincomputationalwindengineeringarehighReynoldsnumbe

10、rones，theReynoldsnumberisaroundtenmillionThesimulation冊(cè)highReynoldsnumberproblemneedsalotof酣ds，esl，xiaUyfortheunsteady—statecalculation，itneedsawidespatialroomandashogXtimetemporalscratchthenodesandelementsafeaboveamilli

11、onInsuchcomputerdevelopinglevelswecall’tcattytheunsteadysimulationbesidesahugesclverorparallelcomputingtechnologyInordertosolvetheproblemthePCclusterparallelcomputingtechnologyistakenBasedonthegeneralSoftwareofCFDthepara

12、llelcomputingplatformisestablishedusinglocalnetwithMPInetworkparallelenvironmentsandthenumericalsimulationofunsteadywindflowfieldaroundabuildingthatcan’thesettledbyasinglecomputerisrealized11”mathmodelforloadbalanceisput

13、forwardinallusiontothedifferentcalculatornodesinPCcluslel：andthemodelhastakenagoodeffect∞parallelcomputingincreasestheefficiencyobviouslyAccordingtothevollexsheddingphenomenaofhighrisebuildingmodelobservedbywindtunneltes

14、tauthorsfirstestablishedaparallelcomputingplatformusingthegeneralsoftwareofCFDCFXandlocaltwtwithMPInetworkparallelenvironments，thensimulatedtheunsteadywindflowfieldarounda3Dhighrisebuildingwhilethesimulationcan’tbesettle