微机型压水堆堆芯安全分析程序的开发及若干问题分析

202Vol.20No.220006ChineseJournalofNuclearScienceandEngineeringJun.2000:1999208220:,,1987,,,1965,,,,1991,,1997,,,,,():,FORTRAN,,,,,,:;;1,(),,,MRCPRS,,,221121111:55t+1A5W5Z=0:5W5Z=-55ZW2pA-A5p5Z-VfwW2A2(2)(,):2615h5t=1CquA55p-WA55p5h5Z-1A5W5Z(3),C=155h+55p(1),(2),(3)21212:55t(g)+55Z(gVg)=g(4):55t[(1-)f]+55Z[(1-)fVf]=-g(5):55t[(1-)fhf+ghg]+55Z[(1-)fVfhf+gVghg]=quA+5p5t(6):5W5t+55Z(W2A)=-A5p5Z-ufdl-€gA(7),A,m2;W,kg/m2;u,m;p,MPa;fw,;q,kW/m2;,;g,kg/m3;Vg,m/s;f,kg/m3;Vf,m/s;hf,kJ/kg;hg,kJ/kg;h,kJ/kg2121Table1Totaltableofselectmodel[1]()[1][5],W23BannetBamet[5]RETRAN202[5]3613,td…ydt=…f(t,…y,…y)…y(t0)=…y,,,,,3,611(3)Fig.1Diagramofcorecontrolvolume4411MRCPRS,MRCPRSFORTAN277,,:,,,,;,,(),,,461;,61;,,;,;,,,2MRCPRS(),:(1);(2);(3);(4)412MRCPRS,,:1930MW;3002kg/(m2s);29314;31657m,3487146m2,29896m2MRCPRS;,,DNBR600s,01125s3,,,32714,4,,,3,4,,,5,90%,10%,DNBR5,7114s,DNBR119530,50%,DNBR11952016,,,6515MPa,10%,6,7114s,42714369185,,01689kPa2210MPa511MRCPRS,5612Fig.2ProgramprocessRERAN202,,,6613()Fig.3Curveofexittemperatureofthecoreatsteadystate(rod)4()Fig.4Curveofexittemperatureofthecoreatsteadystate(rod)5DNBR()Fig.5CurveofMDNBRwhenMassflowrateandthepowerarechanged(rod)6()Fig.6Curveofmiddletemperatureofthefuelrodwhenpressurechanges(rod)21,,,,,,,P31,,41,,51,,61,,7611..:,19862GearCW...:,19873,,..:,19874..:,19905MefaddenJH,etal.RETRAN2022AProgramforTransientThermalHydraulicAnalysisofComplexFluidFlowSystems,Vol.1,EquationsandNumerics,EPRI2NP218502CCM,Idaho,1981GeneralSafetyAnalysisCodeforPWRsCoreZHOUTao,SUGuanghui,QIUSuizheng,JIADounan,RONGSenlin(XianJiaotongUniversity)(Manuscriptreceived20August,1999)Abstract:Amathematicalmodelforthethreeregions,sixnodesPWRscoreispresented,andarelevantcodeismadeup,whichisageneralsafetyanalysisone,itscharacteristicisthemodulestructureanditcanbecalculatedinthemicro2computer.Thesteady2stateanddifferenttransientconditionsofthecorearestudiedandtestedusingthecodewithdifferentalgorithm.Keywords:core;code;safetyanalysis(134,Continuedfrompage134)5,11,1989,2:1TheDeterminationoftheInitialPointofNetVaporGenerationinFlowSubcooledBoilingYANChangqi,SUNZhongning(HarbinEngineeringUniversity,150001)(Manuscriptreceived20August,1999)Abstract:Theexperimentalresultsfortheinitialpointofnetvaporgenerationinup2flowsub2cooledboilinginaninternally2heatedannulusaregiven.Thecharacteristicsoftheinitialpointofnetvaporgenerationandtheproblemongammarayattenuationmeasurementarediscussed.Thecomparisonbetweenthedataandacalculationmodelisgiven,itisshowedthatthedataagreewellwiththemodel.Keywords:subcooledboiling;initialpointofnetvaporgeneration;two2phaseflow;heattransfer861