物理学报Issue(2)：024702-1-024702-9,9.DOI:10.7498/aps.63.024702
零质量射流激励下诱发液体相变及其格子Boltzmann方法模拟
Phase transition in liquid due to zero-net-mass-flux jet and its numerical simulation using lattice Boltzmann metho d
摘要
Abstract
The phase transition in liquid due to the excitation of zero-net-mass-flux jet is simulated using the lattice Boltzmann method. First, the scheme for inlet/outlet boundary of the specific zero-net-mass-flux jet is derived. Then, with the model proposed by Shan and Doolen for single component and multiphase flow, the process of a single bubble formation in a liquid-filled square cavity is simulated, with the excitation of zero-net-mass-flux jet taken into consideration. Further, the investigation of the effects of three significant parameters,ε/T , T and vout/vin, on phase transition in the square cavity is carried out. The results show that the number of vapor nodes increases rapidly in the early stage of phase transition, and then achieves a constant after a long term fluctuation. In some sense, the previously mentioned parameters except T reflect the rapid change of jet velocity when the stages of inflow and outflow are transformed into each other. Thus the evolution of phase transition in liquid can be affected by the parametersε/T and vout/vin mainly, but by parameter T negligibly. When ε/T is small, the single bubble resulting from phase transition is separated from the boundary. On the contrary, when ε/T is large, the corresponding single bubble attaches to the bottom boundary, and the process of phase transition is accelerated. Moreover, with vout/vin increases, the domain filled by vapor phase in the square cavity, decreases slightly. In summary, this study reveals the details of phase transition process in liquid subjected to the zero-net-mass-flux jet.关键词
零质量射流/相变/空化/格子Boltzmann方法Key words
zero-net-mass-flux jet/phase transition/cavitation/lattice Boltzmann method引用本文复制引用
任晟,张家忠,张亚苗,卫丁..零质量射流激励下诱发液体相变及其格子Boltzmann方法模拟[J].物理学报,2014,(2):024702-1-024702-9,9.基金项目
国家重点基础研究发展计划(批准号:2012CB026002)和国家科技支撑计划(批准号:2013BAF01B02)资助的课题.@@@@ Project supported by the National Basic Research Program of China (Grant No.2012CB026002) and the National Key Tech-nology Research and Development Program of the Ministry of Science and Technology of China (Grant No.2013BAF01B02) （批准号:2012CB026002）
