氣力輸送系統(tǒng)中出料閥內(nèi)氣固兩相流動(dòng)的研究.pdf

1、專jj、碩士‘學(xué)位論文⑧論文題目：氣力輸送系統(tǒng)中出料閥內(nèi)氣固兩相流動(dòng)的研究作者姓名顏海霞指導(dǎo)教師邵雪明副教授學(xué)科(專業(yè))流體力學(xué)所在學(xué)院機(jī)械與能源工程學(xué)院提交日期二零零五年一月AbstractThegassolidtwophaseflowbelongstooneofthemultiplephaseflowanditsrelevanttechnologyiswidelyappliedinthefieldsofenergyresource，

2、chemicalindustrymetallurgyenvironmentalprotection，buildingmeterialsandlightindustryetcInrecentdecades，arapiddevelopmentinresearchofthegas—solidtwo—phaseflowhasbeenmade，whateverintheareaoftheoreticalresearchorinpracitical

3、applicationHowevernowadaysmostoftheborderconditionsofapplicationsinthepipelinearerelativelysimpleintheresearchofthegas—solidtwophaseflowsbothathomeandabroadInfact，itisfound，accordingtosomesurveys，thatthemostwearandtearal

4、waysexistinseveralcomplicatedandsuddenlychangedflowfields，suchasthevalveTherefore，thesimulationofthegas—solidtwophaseflownearthevalveinthepipelineinthisthesishasitstheoreticalandpracticalimportanceThisthesisfirstlydescri

5、besthetheoreticalmodelsofthegas—solidtwophaseflowbrieflyOnthebasisofsummarizingandanalyzingoftheinternationalanddomesticworksongassolidtwophaseflowboththeobjectsmadthemethodsastotheresearchinthisthesishavebeenestablished

6、Byusingthecommercialcomputationalshareware—FLUENTintheresearchofthegas—solidtwo—phaseflownearbythedischargevalveinpneumaticconveyingsystemandthek一占turbulancemodelsimulationsinthecalculationofthegasphase，thegasphaseunderd

7、ifferentopcmngofthedischargevalveshasbeenfoundandanalyzedThenaftertheapplicationofstochasticmodel，themotivetracksofcoalparticleswithdifferentdiametersinthepipearesimulatedItisshowedthat5Armofsmallparticlesarethebestinter

8、msoffollowingcharacteristicswhilethe150pmofbigparticlesarepresentedwithoutanyinfluenceofthegasplaceFinallythecollisioncountsperparticleinapipeiscalculatedandtheerasionissuesofvalvesandpipescausedbytheparticlesisalsodiscu