热能与动力

基于格子Boltzmann方法的毛细管相变流动模拟

  • 高洪涛 ,
  • 钟冠翠 ,
  • 吕维 ,
  • 季秀鹏 ,
  • 洪嘉驹
展开
  • (大连海事大学  制冷与低温工程研究所,辽宁  大连   116026)
高洪涛(1966—),男,教授,博士生导师,E-mail:gaohongtao@dlum.cn.

收稿日期: 2018-01-30

  修回日期: 2018-03-13

  网络出版日期: 2018-03-19

基金资助

交通运输部海事局科技项目(2012_27);中央高校基本科研业务费专项资金资助项目(3132016338).

Simulation of capillary phase transition flow based on lattice Boltzmann method

  • GAO Hong-tao ,
  • ZHONG Guan-cui ,
  • LV Wei ,
  • JI Xiu-peng ,
  • HONG Jia-ju
Expand
  • Institute of Refrigeration & Cryogenics Engineering, Dalian Maritime University, Dalian 116026,China)

Received date: 2018-01-30

  Revised date: 2018-03-13

  Online published: 2018-03-19

摘要

通过将大密度比两相流的自由能模型与格子热模型耦合建立一种新的描述气液相变的非等温格子Boltzmann模型,模拟研究毛细管内节流相变过程.结果表明,管内压降是驱动毛细管流动相变的重要因素.同时发现,气液两相间存在高温区,说明相变过程中靠近界面的液体可以不断地从高温处吸收热量,最后完全蒸发为气体.在速度分布上,模拟结果表明,管中心区域气体的速度远大于周围液体的速度.通过格子Boltzmann方法,从更细微的角度解释了毛细管相变机理.

本文引用格式

高洪涛 , 钟冠翠 , 吕维 , 季秀鹏 , 洪嘉驹 . 基于格子Boltzmann方法的毛细管相变流动模拟[J]. 大连海事大学学报, 2018 , 44(4) : 99 -105 . DOI: 10.16411/j.cnki.issn1006-7736.2018.04.015

Abstract

A new non isothermal lattice Boltzmann model describing the phase transition of gas and liquid was established by coupling the free energy model of large density two phase flow with the lattice thermal model to simulate the process of internal throttling in capillary tube. Simulation results show that the pressure drop in the tube is an important factor to drive the capillary flow phase transition. At the same time, it is found that there is a high temperature zone between the two phases of the gas and liquid, which indicates that the liquid closing to the interface can absorb heat from the high temperature area continually in the process of phase transition until it evaporates into gas completely. Simulation results show that the velocity of the gas in the central area is much higher than that of the liquid around. The mechanism of capillary phase transition is explained in a more subtle way by the Lattice Boltzmann method.

参考文献

[1]周勤. 毛细管两相流特性研究[D].杭州:浙江大学,2003.
ZHOU Qin. Study on the flow characteristics of Refrigerants in capillary tubes [D].Hangzhou: Zhejiang University, 2003.(in Chinese)
[2]徐琳,刘楚芸,陈国栋,等.绝热毛细管两相流特性与实验研究[J].制冷学报,2006,(02):13-16.
XU Lin, LIU Chu- yun, CHEN Guo-dong,et al. Analysis and experiment on flow characteristics of refrigerants in adiabatic capillary Tubes [J].Journal of refrigeration, 2006, (02):13-16.(in Chinese)
[3]COOPER L, CHU C K, BRESKEN W R. Simple selection method for capillaries derived from physical flow condition[J]. Refrigerating Engineering,1957,65:37-41.
[4]KO?ZUM? H,YOKOHAMA K.Characteristics of refrigerant flow in a capillary tube[J].Ashrae Transion,1980, 86:19-27.
[5]TR?PLETT K A, GH?AAS?AAN S M, ABDEL-KHAL?K S I, et al. Gas–liquid two-phase flow in microchannels Part I: two-phase flow patterns[J]. International Journal of Multiphase Flow. 1999, 25(3):377-394.
[6]EW?NG M E, WE?NANDY J J, CHR?STENSEN R N. Observations of two-phase flow patterns in a horizontal circularchannel[J]. Heat Transfer Engineering, 1999, 20(1):9-14.
[7]L?U Qin-ming, WANG Wu-jun, PALM B. A Numerical study of the transition from slug to annular flow in micro-channel convective boiling[J]. Applied Thermal Engineering, 2016, 112:73-81.
[8]REVELL?N R, DUPONT V, URSENBACHER T,et al. Characterization of diabatic two-phase flows in microchannels: Flow parameter results for R-134a in a 0.5 mm channel[J]. International Journal of Multiphase Flow, 2006, 32(7):755-774.
[9]YANG Zhi-qaing, GONG Mao-chen, CHEN Gao-fei, et al. Two-phase flow patterns, heat transfer and pressure drop characteristics of R600a during flow boiling inside a horizontal tube[J]. Applied Thermal Engineering, 2017, 120:654-671.
[10]OL?VE?RA J D , COPETT? J B, PASSOS J C. An experimental investigation on flow boiling heat transfer of R-600a in a horizontal small tube[J]. International Journal of Refrigeration, 2016, 72:97-110.
[11]YU Zhao, HEMM?NGER O, FAN L S. Experiment and lattice Boltzmann simulation of two-phase gas–liquid flows in microchannels[J]. Chemical Engineering Science, 2007, 62(24):7172-7183.
[12]HAN K, FENG Y T, OWEN D R J. Modelling of thermal contact resistance within the framework of the thermal lattice Boltzmann method[J]. International Journal of Thermal Sciences, 2008, 47(10):1276-1283.
[13]CHEN Sheng, T?AN Zhi-wei. Entropy generation analysis of thermal micro-Couette flows in slip regime[J]. International Journal of Thermal Sciences, 2010, 49(11):2211-2221.
[14]AL-ZOUB? A, BRENNER G. Simulating fluid flow over sinusoidal surfaces using the lattice Boltzmann method[J]. Computers & Mathematics with Applications, 2008, 55(7):1365-1376.
[15]INAMURO T, OGATA T, TAJIMA S, et al. A lattice Boltzmann method for incompressible two-phase flows with large density differences [J]. Journal of Computational Physics, 2004, 198(2):628-644.
[16]INAMURO T. Lattice Boltzmann methods for viscous fluid flows and for two-phase fluid flows [J]. Fluid Dynamics Research, 2006, 38(9):641-659.
[17]DONG Zhi-qaing, LI Wei- zhong, SONG Yong- chen. Lattice Boltzmann simulation of growth and deformation for a rising vapor bubble through superheated liquid [J]. Numerical Heat Transfer Part A Applications, 2009, 55(4):381-400.
[18]陈国栋.小型制冷装置毛细管可视化实验研究[D].杭州:浙江大学,2006.
CHEN Guo-dong . Visualized experimental study of capillary tube in small-scale refrigeration equipment [D].Hangzhou: Zhejiang University, 2006.(in Chinese)
[19]SEIXLACK A L, BARBAZELLI M R. Numerical analysis of refrigerant flow along non-adiabatic capillary tubes using a two-fluid model [J]. Applied Thermal Engineering, 2009, 29(2):523-531.
文章导航

/