發(fā)動(dòng)機(jī)冷卻水泵設(shè)計(jì)平臺(tái)的建立與數(shù)值驗(yàn)證.pdf

1、江蘇大學(xué)碩士學(xué)位論文發(fā)動(dòng)機(jī)冷卻水泵設(shè)計(jì)平臺(tái)的建立與數(shù)值驗(yàn)證姓名：吳偉平申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：動(dòng)力機(jī)械及工程指導(dǎo)教師：姜樹(shù)李20120606江蘇大學(xué)碩士學(xué)位論文AbstractThedevelopmentofenginehasbeingtowardtoUghspeed，highpressurizationandhigllpowerwhichmakestheheatloadoftheengineverysevereIfthecooling

2、effectisbad，itwillcausgengineoverheating，whichwillthreatthereliabilityanddurabilityofengineseriouslyTheenginecooling—pumpisparticularlyimportantcomponentsTheenginecooling—pumpisoneofthemainpartsoflowingtheheatloadofengin

3、e，SOitisallimportantparttoberesearchedThemainlycontentsofthispaperareasfollows：Atfirst，characteristicsofenginecoolingpumpandthetraditionalmethodsofdesigningofthecentrifugalpumphavebeenintroducedinthispaperbasedonwhichcen

4、trifugalpumpdesign—platformhasbeenestablishedbyusingVisualBasicprogramThecentrifugalpumpdesignplatformCallbeenusedtodesignseveralkindsofenginepumpThroughinputtingsomeofthebasicparametersofpumpimpelleranddiffuserintothece

5、ntrifugalPumPdesignplatform，wecangetrelativelyfeasibledesignschemeofenginecooling—pump，whichprovideinitialpumpmodelforperformanceanalysisThreedimensionalparametricmodelofcentrifugalPumphavebeenbulitbyusingSoftwareofPro＼E

6、SOdifferentstnlcturesizesoftheThreedimensionalpumpcallbeengotbyjustinputtingthesizeparameterofstructureSC＼：Tetra勰akindofCFDsoftware，isusedtosimulatenumericallytheinteriorturbulentflowofthecentrifugalpumPunderdifferentflo

7、wanddifferentspeedsMuchinformation，suchasvelocitypressuredistributionandhydrauliclossesofthewholeflowfield，hasbeenobtainedthroughCFDsimulationAndthentheenginecoolingpump’Sperformanceundertheratedconditionshasbeenanalyzed

8、detailed，andthecentrifugalpumpsinsideflowcharacteristicsundervarietyworkingconditions(differentflowratesanddifferentimpellerspeeds)havebeenanalyzedandthemhavebeencomparedwinleachotherThroughtheCFDsimulation，somebadflowph