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《公路隧道射流通風(fēng)數(shù)值模擬與風(fēng)機(jī)安裝參數(shù)優(yōu)化》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、分類號(hào)坐§i:§密級(jí)Y1526357單位代碼10618學(xué)號(hào)106260272墨麼交迫天謦碩士學(xué)位論文論文題目:公路隧道射流通風(fēng)數(shù)值模擬與風(fēng)機(jī)安裝參數(shù)優(yōu)化HighwaytunneljetfaninstallationNumericalsimulationandfanparameteroptimization研究生姓名:毯撻導(dǎo)師姓名、職稱:傅鋼副教授申請(qǐng)學(xué)位門(mén)類專業(yè)名稱:論文答辯日期:2009年04月0719學(xué)位授予單位:重慶交通大學(xué)答辯委員會(huì)主席:姜德義評(píng)閱人:姜德義2009年04月曾德榮說(shuō)明風(fēng)機(jī)安裝在同向工況下時(shí),風(fēng)機(jī)布置較合適。5當(dāng)隧道屬于三車(chē)道大斷面時(shí),風(fēng)機(jī)的布置不需要做特殊布
2、置,只需要和一般斷面布置方式相同即可。6當(dāng)隧道彎曲角度為1000"--1200,隧道半徑為150---250m時(shí),由數(shù)值模擬可以看出:當(dāng)風(fēng)機(jī)安裝在彎道中間位置時(shí),速度分布最均勻,速度大小最合適。說(shuō)明風(fēng)機(jī)安裝彎道中間位置時(shí),風(fēng)機(jī)布置較合適。7當(dāng)隧道中有突變時(shí),盡量將風(fēng)機(jī)安置在三車(chē)道大斷面中。盡量減少風(fēng)機(jī)吹出來(lái)的流場(chǎng)在突變處碰撞的損失。最后,論文以雁門(mén)關(guān)特長(zhǎng)公路隧道縱向通風(fēng)系統(tǒng)為模型,從局部到整體進(jìn)行了全面的數(shù)值模擬分析與研究,得到了許多有用的結(jié)論,并給出了雁門(mén)關(guān)公路隧道通風(fēng)相應(yīng)的優(yōu)化建議。關(guān)鍵詞:公路隧道;縱向通風(fēng);數(shù)值模擬;fluent;安裝參數(shù)優(yōu)化ABSTRACTNotonlyt
3、hedraftcontrolsystemmustsatisfythetunneldailydrivingoperationhealth,thesaferequest,satisfiesinthetunnelfiresituationtodischargefumesystem’Seffectiveoperationtoguaranteethetunnelsecurityoperation,moreovermustreducetheenergyconsumptionandtheresourceswastesatisfiedly,reducesthetunneloperationcost
4、thefunction.Inthispaper,thetunnelventilationsystemisoptimizedtoexplorethehighwaytunnelrational,scientific,energy,economicventilationsystem.TheuseofcomputationalfluiddynamicssoftwareFLUENTsimulationofahighwaytunneljetfaninstalledundertheconditionsofvariousflowpatterns.Eventuallyproposedhighwayt
5、unneljetfaninstallationinavarietyofconditions,theoptimalprogram.Whichneedtooptimizetheinstallationofthemainparametersare"(1)Domefromtheconvectionfanandtheimpactofstate(2)Fansaroundtheimpactofthedistancebetweenthestateconvection(3)TheimpactofLargesectionofthreelow-powerportfoliowithtwopowerfulc
6、ombination(4)Fansfromoutsidethehole-sidedistanceandthedirectionoftherelationshipbetweenthenaturalwind(5)Fansfromthehole—sidedistanceandthesizeoftherelationshipbetweencross.section(6)Curvetoairblowerpositioninfluence(7)Cross·sectionoffanssuddenlybecomelargerdistancebetweentheimpactoflayoutAnaly
7、sisbysimulatingthemainconclusionhas(1)Conditionsinthesamedirection.whenthefansandthevaultatI.94metersdistance~2.09meters,thevelocitydistributionofthemostuniform,thespeedofthemostsuitablesize.Thatwhenfansandthevaultat1.94metersdistance~2