45255.室內對流水槽設計及邊界層和湍流實驗研究

1、中國科學院合肥物質科學研究院碩士學位論文室內對流水槽設計及邊界層和湍流實驗研究姓名：徐安倫申請學位級別：碩士專業(yè)：光學指導教師：吳曉慶20080501AbstractDesignofconvectionwatertankandIaboratorySimuIationoftheatmospheriCboundaryIayerandopticaIturbuIencecharacteristiCAnlunXu(Atmosphericoptic

2、s)DirectedbyProfessorXiaoqingWuAbstractInthispaper，basicconceptandcommoncharacteristicofatmosphericboundarylayer，andseveralexperimentsfromlaboratorysimulationonatmosphericboundarylayerareintroducedAccordingtoanalyzingand

3、summarizingthelaboratorymodelsystem，alaboratorysimulationonturbulentflowsystemisdevelopedBasedonthissystem，atmosphericopticalturbulence，atmosphericconvectiveboundarylayerandatmosphericstableboundarylayeraresimulatedandin

4、vestigatedThemainresultsasfollows：(1)ThedataacquisitionsoftisdevelopedwithVisualBasic60Itcancollectdata，savedata，displaytheverticalprofilesofmeantemperatureandSOon(2)AccordingtotheprincipleofIFA300hotwireandhotfilmanemom

5、eterandneedofmeasurement，anewmethodforcalibratingIFA300isintroduced(3)Twomethods(singlepointmethodandscintillationmethod)ofmeasuringrefractiveindexstructureparameter《areanalyzedGoodagreementexistswhencomparingwiththequan

6、tumandvariationcharacteristicofC：(4)Thecharacteristicsoftemperaturestructureofthestableboundarylayer(SBL)andconvectiveboundarylayer(CBL)bycontrollingtemperatureofthetopandbottomofthelaboratorywatertankWarmatmosphereflows

7、throughthesurfaceofcoolatmosphereuniformlytotheSBL，andflatterrainsurfaceareuniformlyheatedtotheCBLVerticalprofilesofmeantemperatureandheatfluxaremeasuredintheSBLandCBLconditions，alsotheevolutionofmixedlayerdepthispresent

8、edResultsshowthatthecharacteristicsoftemperaturestructureoftheSBLandCBLfromlaboratorymodelareingoodagreementwiththeobservedresultsfromtheatmosphericboundarylayer(5)Thescalingexponent，thevarietyofqwithheatingtimeinthediff