文章编号：0258-0926(2023)02-0069-08;DOI:10.13832/j.jnpe.2023.02.0069矩形窄通道内汽泡滑移与冷凝前期生长模型研究张林1,2，刘汉周2，刘晓晶1，陈勇2，陈德奇21.上海交通大学核科学与工程学院，上海，200240；2.重庆大学能源与动力工程学院，重庆，400044摘要：矩形窄流道内汽泡生长会直接改变相界面浓度，从而影响流道的传热传质性能。为获得适用于窄流道内不同类型的汽泡生长模型，基于通体可视的实验本体，开展壁面沸腾流动换热实验。基于传热能量方程，研究过冷沸腾中汽泡滑移与冷凝前期两种情况下汽泡生长模型。实验结果表明汽泡呈现两种形式的生长，即汽泡滑移生长以及冷凝前期生长。建立了两种情况下的汽泡生长模型，实验数据验证模型误差在20%以内。因此，本研究能为沸腾两相数值模拟提供更加精细化的汽泡生长模型，从而提高汽泡行为的预测精度。关键词：冷凝前期生长；汽泡滑移生长；四面可视化；壁面沸腾；实验研究中图分类号：TL334文献标志码：AModelStudyonBubbleSlideandEarly-StageCondensationGrowthinRectangularNarrowChannelZhangLin1,2,LiuHanzhou2,LiuXiaojing1,ChenYong2,ChenDeqi21.SchoolofNuclearScienceandEngineering,ShanghaiJiaoTongUniversity,Shanghai,200240,China;2.SchoolofEnergyandPowerEngineering,ChongqingUniversity,Chongqing,400044,ChinaAbstract:Bubblegrowthinrectangularnarrowchannelcandirectlychangethephaseinterfacialareaconcentrationandthusaffecttheflowchannel'sheatandmasstransferperformance.Inordertoobtainamodelfordifferenttypesofbubblegrowthinanarrowflowchannel,wallboilingflowheattransferexperimentsarecarriedoutbasedonathrough-bodyvisibletestsection.Thebubblegrowthmodelsarestudiedforbothbubbleslideandearly-stagecondensationconditionsinsubcooledboiling.Theexperimentalresultsshowthattherearetwoformsofbubblegrowth,namely,bubbleslidegrowthandearly-stagecondensationgrowth.Basedontheheattransferenergyequation,thebubblegrowthmodelsunderthetwoconditionsareestablished,anditisverifiedthroughtheexperimentaldatathatthemodelerroriswithin20%.Therefore,thisstudycanprovideamorerefinedmodelofbubblegrowthfortwo-phasenumericalsimulationofboiling,thusimprovingtheaccuracyofbubblebehaviorprediction.Keywords:Early-stagecondensationg...
