三維溫度場聲學(xué)測量方法及計算機仿真研究.pdf

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