双加热湿度传感器的CFD分析与加热策略设计.pdf

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1、第25卷第8期传感技术学报V01．25NO．82012年8月CHINESEJOURNALOFSENSORSANDACFUATORSAug．2012CFDAnalysisandHeatingStrategyDesignofHeatedTwinHumiditySensorLIUQingquan，YANG'，YANGRo~ang，ZHANGflahong，LIMin1,2'DAIWei(1．Jiangsu麟Laboratory’MeteorologicalObservationandSignalProcessing，Nanfing210044，China

2、；2．SchoolofElectronicandln／brmationEngineering，NanfingUniversityInformationScienceandTechnology，Nanfing210044，China；3．MeteorologicalObservationCenterofChinaMeteorologicalAdministration，Beijing100081，China；4．SchoolQ厂ComputerandSoftware，Na．jingUniversityofInformationScienceandTe

3、chnolog)，Nanjing210044，China)Abstract：Inthefieldofupperairmeteorologicalobservation。clouddroplets，iceandfrostcontaminationOilthesurfaceofradiosondehumiditysensormaycompromisethemeasurementaccuracy．Heatedtwinhumiditysensoropensupanewoppo~unitytotacklethisproblem．Inordertooptimi

4、zetheheatingstrategyofheatedtwinhumiditysensor，studyingthesteadyandtransientcharacteristicsofthesensorisofgreatinterest．Theparametersofthefourstagesinameasurementcyclehavebeenoptimizedbyusingacomputationalfluiddynamics(CFD)methodinthiswork．Steady—stateanalysishasbeenimplemente

5、dtosimulatetheinteractionofthetwinsensorswithdifferentspacing．Transientanalysishasbeencamedouttoobtaindynamicparameters，includingthelengthsofheatingandcoolingstages．Theresultsshowthattherangesofthemeasurementperiodofheatedtwinhumiditysensoris45S～145s．Forcaseswheretheradiosonde

6、risingvelocityis6m／s，thetemperaturesoftwosensorsdonotaffecteachother，iftheirdistanceiSnolessthan3mm．Twodifferentheatingstrategies，high—altitudeandlow—altitude／nodes，areproposedtooptimizethemeasurementcycle，where40℃and46c《=areselectedastheamplitudesoftemperaturedrop，respectivel

7、y．Keywords：heatedtwinhumiditysensor；heatingstrategy；computationalfluiddynamics；high—altitudemeteorologicalobservations；transientanalysisEEACC：7230；7320Rdoi：10．3969／j．iSSB．1004—1699．2012．08．004双加热湿度传感器的CFD分析与加热策略设计刘清倦，杨杰，杨荣康。，张加宏，李敏一，戴伟(1．江苏省气象探测与信息处理重点实验室，南京210044；2．南京信息工程大学，电

8、子与信息工程学院，南京210044；3．中国气象局气象探测中心，北京100081；4．南京信息T程大学，计算机与软件学院，