ASTM E598-1996(2002) 用瞬变零点量热器测量高能环境的超级传热速率的方法
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【英文标准名称】:StandardTestMethodforMeasuringExtremeHeat-TransferRatesfromHigh-EnergyEnvironmentsUsingaTransient,Null-PointCalorimeter
【原文标准名称】:用瞬变零点量热器测量高能环境的超级传热速率的方法
【标准号】:ASTME598-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E21.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:测量仪器;航空航天运输;热传递;材料;测量技术;热量计;能量;航天技术
【英文主题词】:calirometer;convective;heatflux;heatfluxgage;null-point;radiative;transienttemperature
【摘要】:1.1Thistestmethodcoversthemeasurementoftheheat-transferrateortheheatfluxtothesurfaceofasolidbody(testsample)usingthemeasuredtransienttemperatureriseofathermocouplelocatedatthenullpointofacalorimeterthatisinstalledinthebodyandisconfiguredtosimulateasemi-infinitesolid.Bydefinitionthenullpointisauniquepositionontheaxialcenterlineofadisturbedbodywhichexperiencesthesametransienttemperaturehistoryasthatonthesurfaceofasolidbodyintheabsenceofthephysicaldisturbance(hole)forthesameheat-fluxinput.1.2Null-pointcalorimetershavebeenusedtomeasurehighconvectiveorradiantheat-transferratestobodiesimmersedinbothflowingandstaticenvironmentsofair,nitrogen,carbondioxide,helium,hydrogen,andmixturesoftheseandothergases.Flowvelocitieshaverangedfromzero(static)throughsubsonictohypersonic,totalflowenthalpiesfrom1.16togreaterthan4.65x101MJ/kg(5x102togreaterthan2x104Btu/lb.),andbodypressuresfrom105togreaterthan1.5x107Pa(atmospherictogreaterthan1.5x102atm).Measuredheat-transferrateshaverangedfrom5.68to2.84x102MW/m2(5x102to2.5104Btu/ft2-sec).1.3Themostcommonuseofnull-pointcalorimetersistomeasureheat-transferratesatthestagnationpointofasolidbodythatisimmersedinahighpressure,highenthalpyflowinggasstream,withthebodyaxisusuallyorientedparalleltotheflowaxis(zeroangle-of-attack).Useofnull-pointcalorimetersatoff-stagnationpointlocationsandforangle-of-attacktestingmayposespecialproblemsofcalorimeterdesignanddatainterpretation.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_200_10
【页数】:10P.;A4
【正文语种】:
【原文标准名称】:用瞬变零点量热器测量高能环境的超级传热速率的方法
【标准号】:ASTME598-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E21.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:测量仪器;航空航天运输;热传递;材料;测量技术;热量计;能量;航天技术
【英文主题词】:calirometer;convective;heatflux;heatfluxgage;null-point;radiative;transienttemperature
【摘要】:1.1Thistestmethodcoversthemeasurementoftheheat-transferrateortheheatfluxtothesurfaceofasolidbody(testsample)usingthemeasuredtransienttemperatureriseofathermocouplelocatedatthenullpointofacalorimeterthatisinstalledinthebodyandisconfiguredtosimulateasemi-infinitesolid.Bydefinitionthenullpointisauniquepositionontheaxialcenterlineofadisturbedbodywhichexperiencesthesametransienttemperaturehistoryasthatonthesurfaceofasolidbodyintheabsenceofthephysicaldisturbance(hole)forthesameheat-fluxinput.1.2Null-pointcalorimetershavebeenusedtomeasurehighconvectiveorradiantheat-transferratestobodiesimmersedinbothflowingandstaticenvironmentsofair,nitrogen,carbondioxide,helium,hydrogen,andmixturesoftheseandothergases.Flowvelocitieshaverangedfromzero(static)throughsubsonictohypersonic,totalflowenthalpiesfrom1.16togreaterthan4.65x101MJ/kg(5x102togreaterthan2x104Btu/lb.),andbodypressuresfrom105togreaterthan1.5x107Pa(atmospherictogreaterthan1.5x102atm).Measuredheat-transferrateshaverangedfrom5.68to2.84x102MW/m2(5x102to2.5104Btu/ft2-sec).1.3Themostcommonuseofnull-pointcalorimetersistomeasureheat-transferratesatthestagnationpointofasolidbodythatisimmersedinahighpressure,highenthalpyflowinggasstream,withthebodyaxisusuallyorientedparalleltotheflowaxis(zeroangle-of-attack).Useofnull-pointcalorimetersatoff-stagnationpointlocationsandforangle-of-attacktestingmayposespecialproblemsofcalorimeterdesignanddatainterpretation.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_200_10
【页数】:10P.;A4
【正文语种】:
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