化工学报Issue(11)：4359-4365,7.DOI:10.11949/j.issn.0438-1157.20150413
超声波场中蒸汽气泡凝结过程及传热特性
Condensation process and heat transfer of vapor bubbles in ultrasonic field
摘要
Abstract
Condensation processes of vapor bubbles being injected into subcooled water with and without ultrasonic vibration were recorded by a high-speed video camera to analyze the effects of ultrasonic field on the condensation process and heat transfer of vapor bubbles. Experimental results indicated that the lattice shaped capillary wave formed on the bubble surface increased the condensation heat transfer area greatly and intensified the turbulence in the thermal boundary layer around the vapor bubble, enhancing condensation heat transfer and accelerating bubble condensation in the ultrasonic field. Based on experimental data of relatively large vapor bubbles at liquid subcooling of 15—60 K, empirical correlations were obtained for predicting the condensation heat transfer of vapor bubbles with and without ultrasonic, with deviations within±30%.关键词
凝结/强化换热/超声波/气液两相流/传热Key words
condensation/enhancement of heat transfer/ultrasonic vibration/gas-liquid flow/heat transfer分类
能源科技引用本文复制引用
唐继国,阎昌琪,孙立成..超声波场中蒸汽气泡凝结过程及传热特性[J].化工学报,2015,(11):4359-4365,7.基金项目
国家自然科学基金项目(51376052，11475048)；四川大学科研基金项目（YJ201432）。@@@@supported by the National Natural Science Foundation of China (51376052，11475048) and the Scientific Research Foundation of Sichuan University (YJ201432) （51376052，11475048）
