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ID:36601151
大小:7.42 MB
页数:105页
时间:2019-05-12
《公路隧道射流通风数值模拟与风机安装参数优化》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、分类号坐§i:§密级Y1526357单位代码10618学号106260272墨麽交迫天謦硕士学位论文论文题目:公路隧道射流通风数值模拟与风机安装参数优化HighwaytunneljetfaninstallationNumericalsimulationandfanparameteroptimization研究生姓名:毯挞导师姓名、职称:傅钢副教授申请学位门类专业名称:论文答辩日期:2009年04月0719学位授予单位:重庆交通大学答辩委员会主席:姜德义评阅人:姜德义2009年04月曾德荣说明风机安装在同向工况下时,风机布置较合适。5当隧道属于三车道大断面时,风机的布置不需要做特殊布
2、置,只需要和一般断面布置方式相同即可。6当隧道弯曲角度为1000"--1200,隧道半径为150---250m时,由数值模拟可以看出:当风机安装在弯道中间位置时,速度分布最均匀,速度大小最合适。说明风机安装弯道中间位置时,风机布置较合适。7当隧道中有突变时,尽量将风机安置在三车道大断面中。尽量减少风机吹出来的流场在突变处碰撞的损失。最后,论文以雁门关特长公路隧道纵向通风系统为模型,从局部到整体进行了全面的数值模拟分析与研究,得到了许多有用的结论,并给出了雁门关公路隧道通风相应的优化建议。关键词:公路隧道;纵向通风;数值模拟;fluent;安装参数优化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
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