45255.室內(nèi)對(duì)流水槽設(shè)計(jì)及邊界層和湍流實(shí)驗(yàn)研究

1、中國科學(xué)院合肥物質(zhì)科學(xué)研究院碩士學(xué)位論文室內(nèi)對(duì)流水槽設(shè)計(jì)及邊界層和湍流實(shí)驗(yàn)研究姓名：徐安倫申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：光學(xué)指導(dǎo)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