超聲渦街流量計仿真數(shù)值模擬及實驗研究.pdf

1、超聲渦街流量計仿真數(shù)值模擬及實驗研究專業(yè)名稱：系統(tǒng)分析與集成申請人：龔麗輝指導教師：王力虎論文答辯委員會主席：監(jiān)_巫委員：：『r與／椎劁》心劫翻觴滔餳伍——廣西師范大學碩士論文—————————————————————————二——二r二一NumericalSimulationandExperimentalStudyofUltrasonicVortexFlowmeterStudentname：GongLihuiMajor：SystemA

2、nalysisandIntegrationControlEnrollmentYear：2011Supervisor：ProfWangLihuResearch’Orientation：IndustrialAbstract3000yearsago，inancientEgyptwhobarriermethodtomeaSuretheflowoftIleNileInmodemtimes，flowmetersarewidelyusedinvari

3、ousfieldsandrelatedresearch，therebypromotingthedevelopmentofaerospace，radarr鋤otesensing，meteorologicalscienceTodaytheEnergyisincreasinglyexpensive，andthedemandofthemeaSurementwithhighprecisionisincreasingSmalldifferences

4、ofmeaSurementonOiltransportlinewillresultinhugeeconomiclossesMeanwhile，oil鋤dnaturalgasaslocon仃lbutetothegreenhousegaseffect，limitingemissionscreditsundertheKyotoProtocol，emissionreductionisresultofmanynodealloverthecomlt

5、rVt0accuratelymeasureV0nexflowmeterCoriolisflowmeterandultrasonicflowmeter，threetypeshaVebeendevelopinginlast40years，shouldbethemostimport鋤tflowmetersMeasurementrangeofvortexflowmeteradvantageshavebeenwidelVwithnomovingp

6、arts；CoriolisflowmeterandultrasonicflowmeteristhenoncontactFlowmeterContentofthisprojectistodevelopanewtypeofultrasonicvonexflowmeterimprovedperformanceatlowReynoldsnumberflowfieldoffluiddynamics，extendedrangelimits，weak

7、nessestoimprovemeasurementof10wspeedperformanceThisdissertationincludesthefollowingtasks：1Vortexstudyathomeandabroad，combiningresearchandanalysisneedtobeimproved；2WhenRANSmodelintheformofthemodelofacousticattenuation：3De