可燃?xì)怏w中激波聚焦的數(shù)值模擬.pdf

1、分類(lèi)號(hào)密級(jí)學(xué)位論文可燃?xì)怏w中激波聚焦的數(shù)值模擬唐敖(作者姓名)指導(dǎo)教師姓名董型割墼蕉申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)名稱(chēng)墊鰹?zāi)照撐奶峤蝗掌?QQ5=亙：5論文答辯日期——學(xué)位授予單位和日期由室壟墨盤(pán)鱟答辯委員會(huì)主席評(píng)閱人年月日注l：注明《國(guó)際十進(jìn)分類(lèi)法UDC))的類(lèi)號(hào)?！猒————————————————————————————————————————_———

2、—————————_——一AbstractAsapartoftheproject“enhancementmechanismoffocusingshock—flameinteractionsondeflagration—todetonationtransition”，thenumericalinvestigationwascarriedouttostudyinddemshockwavefocusingonparabolicreflecto

3、rinCHdAIRmixtureThemulti—component，reactive，two—dimensionalaxisymmetricEulerequationswereemployedtosimulatetheprocessThemodifiedhi【曲一resolutionwavepropagationalgorithmwasadoptedtosoNetheconvectiontermoftheequationsAdetai

4、led19stepchemicalmechanismofCIh／A／RwasusedtosolvethechemicalsourcetermThenaprogramwasextendedtosimulatetheprocessofshockwavefocusingonparabolicreflectorinCH4／AIRmixtureThecomputationalresultswerecomparedwiththeexperiment

5、alresults，andthereasonableagreememsareobtainedThecomputationalmodeliSthenextendedtostudytheeffectsofcontrolledparameters，suchasincidentshockwaveMachnumberdepthofthereflectorandthechemicalactivityofthemixture，onthecombust

6、ionmodeafterthefocusingAndthechangesoftheflowstructurewerealsoinvestigatedThecomputationalresultsshowedthatthethreedifferentpatterns，namelynoignitmnmode，deflagrationmodeanddetonationmodecouldoccurwiththevariationofthesep

7、arametersStrongincidentshockwave，deepreflectorand，orhighchemicalactivityofmixturetendtogeneratedetonationinthecombustiblegaseousmixtureKeywordsshockwavefocusing；shockwavereflection；detonation；deflagrationnumericalsimulat