Simulation of Boiling Process with Lattice Boltzmann Method

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Simulation of Boiling Process with Lattice Boltzmann Method

更新时间：2025-07-09

- Simulation of Boiling Process with Lattice Boltzmann Method
- Vol. 43, Issue 7, Pages: 25-29(2009)
- 作者机构：
  
  重庆大学动力工程学院,重庆,400030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124
- Online First：10 July 2009，
  
  Published：2009
- 稿件说明：
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Simulation of Boiling Process with Lattice Boltzmann Method[J]. 2009, 43(7): 25-29.
DOI：

Simulation of Boiling Process with Lattice Boltzmann Method[J]. 2009, 43(7): 25-29. DOI：

摘要

提出了一种新的描述气液相变过程的格子Boltzmann理论模型

并利用该模型对液化和蒸发过程进行了模拟.对液化过程的计算结果表明

气相的体积分数、液相和气相的密度与理论解的最大相对误差分别为1.18%、0.23%、0.32%

而蒸发过程的计算结果相应的最大相对误差分别为0.08%、0.48%、0.20%

较前人研究的结果更接近理论解.为进一步验证该模型模拟复杂相变问题的可行性

利用该模型对池内沸腾和垂直管道中的流动沸腾现象进行了模拟

观察到气泡随时间变化不断长大

气泡受浮升力的影响脱离壁面

以及气泡在液相中上升时发生碰撞、聚合等现象.

Abstract

A new lattice Boltzmann model is proposed to describe liquid-vapor phase transitions

and then the simulation on condensation and vaporization is performed. The simulation results show that the maximum relative error of the volume fraction of vapor phase

the liquid phase density

and the vapor phase density is 1.18%

0.23%

and 0.32%

respectively

for the process of condensation and 0.08%

0.48%

and 0.20%

respectively

for the process of vaporization. Compared with previous results

the present results are more close to analytical solutions. In order to further confirm the feasibility to simulate complicated phase transitions with the present model

the simulation on pool boiling and boiling flow in a vertical pipe is conducted. It is observed from the results that small and spherical bubbles grow near the wall and rise due to buoyancy

and collisions and coalescences of the bubbles occur occasionally while the bubbles rise.

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references

GUNSTENSEN A K, ROTHMAN D H. A Galilean-invariant immiscible lattice gas [J]. Physica: D,1991,47(2): 53-63.

SHAN X W, GARY D. Multicomponent lattice Boltzmann model with interparticle interaction [J]. Journal of Statistical Physics, 1995, 81(1/2): 379-393.

MARTYS N, CHEN H D. Simulation of multicomponent fluids in complex three-dimensional geometries by the lattice Boltzmann method [J]. Physical Review: E, 1996, 53(1): 743-751.

SWIFT M, OSBORN W, YEOMANS J. Lattice Boltzmann simulations of nonideal fluids [J]. Phys Rev Lett,1995,75(5):830-833.

KONO K, ISHIZUKA T, TSUDA H, et al. Application of lattice Boltzmann model to multiphase flows with phase transition [J]. Computer Physics Communications, 2000, 129(1/3): 110-120.

SHAN X W, GARY D. Diffusion in a multicomponent lattice Boltzmann equation model [J]. Physical Review: E, 1996, 54(4): 3614-3620.

SHAN X W, CHEN H D. Simulation of nonideal gases and liquid-gas phase-transitions by the lattice Boltzmann equation [J]. Physical Review: E, 1994, 49(4): 2941-2948.

郭照立,郑楚光,李青,等. 流体动力学的格子Boltzmann方法[M]. 武汉:湖北科学技术出版社,2002: 157-160.

郭烈锦. 两相与多相流动力学[M]. 西安:西安交通大学出版社,2002: 378-379.

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