三維溫度場聲學測量方法及計算機仿真研究.pdf

1、大慶石油學院碩士學位論文三維溫度場聲學測量方法及計算機仿真研究姓名：王瑞雪申請學位級別：碩士專業(yè)：測試計量技術(shù)及儀器指導教師：王明吉20070315ABSTRACTInvestigationsonAcousticDetectingTechniquesandSimulationof3DTemperatureFieldABSTRACT111edetectionofthetemperaturefieldisveryimportantinsco

2、pesofresearchestheagriculturalandindustrialproductionandthedailylifeHoweverthemeasurementofthetemperaturefieldisSOcomplexthattheconventionalmethodscannotmeetthedemandsofproductionandlivingAsanewstyletemperaturemeasuringm

3、ethod，theacousticmethodismuchfasterandwithahighprecisionaswellasabroadermeasuringrangeItCansatisfytherequirementsofmeasuringaccuratelyandcontrollingonlineonthetemperaturefieldinindustrialproductionsandscientificinvestiga

4、tions，especiallyintheinclementconditionofhightemperatureThissubjectemphasizesontheinvestigationofacousticmeasuringmethodsandalgorithmtotemperaturefieldsIthasimplementedthereconstructionandsimulationofthe3Dtemperaturefiel

5、dbyacousticmethodAtfirstallanalysisontherealisticimportanceofthetemperaturefieldmonitoringhasbeengiyenaswellasthefimdamentalandthedevelopmentofacoustict11ermometryhasbeenintroducedinthepaperThenbecausetheacousticwaverefr

6、actionintemperaturegradientfieldiSanimportantfactorthataffectsthereconstructingaccuracyoftemperaturefieldbyacousticmethod，thissubjectresearchesdeeplyontheprincipleandalgorithmofraytracingTherearetotalthreecommonalgorithm

7、sofraytracinginthispaperInaddition，theraytracingandsimulationofthetruepropagationpathsof2Dand3DacousticwavebyforwarddeployingtriangleanddeployingregulartetrahedronsagecarriedoutespeciallyTheprincipleandimplementationofso

8、mefamiliarreconstructingalgorithmsoncomplextemperaturefieldbyacousticmethodsisalsopresentedInordertoimprovethestabilityofthesolution，theregularizationmethodcanbeUSedtoconvertan川一posedproblemintoawell—posedproblemAtlastal

9、linvestigationonthereconstructingmechanism，methodsandrelationalalgorithmsof3DtemperaturefieldwithacousticpyrometryismadeFurthermore，anelementarydiscussiononkeypointsinthereconstructionisgiVeilOnthegroundofthese，theleasts

10、quareregularizingalgorithmforreconstructing3DtemperaturefieldispresentedInthispartofthepaperacomparisonandanalysishavebeenmadeonthereconstructingqualityofthetemperaturefieldondifferentpresuppositions，includingwhethercons

11、ideringtheacousticwaverefractionornotthedifferentemountsandlocationsofsensorsetc111eanalyzingresultshOWSthatitwilIimprovethereconstructingaccuracydeeptywithamodificationandcompensationtotheacousticwaveinthereconstructing

12、processItalsoshowsthattheincreaseoftheamountofacousticsensorscanimprovethereconstructingaccuracytosomeextentTheyarcconsistentwellwiththetheoreticalestimateKeywords：Acousticreconstructionoftemperaturefield：Inverseproblem；