【微重力条件下两相流动沸腾换热地面模拟试验研究】品成道.pdf

【微重力条件下两相流动沸腾换热地面模拟试验研究】品成道.pdf

THEEXPERIMENTALSTUDY OFSIMULATINGONEARTH TWO-PHASEFLOWBOILING HEATTRANSFER UNDERMICROGRAVITY By Lu Chengdao SupervisedBy Prof.Cheng Shangmo and Li Fojin ADissertation SubmittedtotheDegreeEvaluatingCommitteeof HuazhongUniversity ofScience and Technology for theDegreeofDoctorofPhilosophy inEngineerinABSTRACT Withthe increase ofaircraft scale,singlephaseforcedflowheat transfer cant meet the requirement ofheat-controlling system in future large-scale aircrafts.Two-phase flow,which transfers heat throughpotential heat duringphase change,withhigh heat transferefficiency lessworkingmaterial、nearly91.-12目录 51微重下两相流动沸腾换热地面模拟试验研究的必要性 1航天器中的热控制模式大型航天器中高热负荷传输的模式 1单相换热系统与两相换热系统的比较 1微重力条件下两相流动换热系统介绍 1微重与常重下两相流动沸腾换热之间的比较 1微重力下两相流动沸腾换热地面模拟试验的意义 第二章微重力下两相流动沸腾换热综述 2微重力下两相流动传热中的热毛细流 2微重力下气液流动的主要流型 2微重力下核态沸腾的换热机理 2汽泡的生长和破裂 2汽泡脱离的尺寸和轨迹 2.