基于焓法与伪焓法的固液相变传热LB模型分析  

Analysis of the Enthalpy Method and Pseudo-Enthalpy Method Based Lattice Boltzmann Model for Solid-Liquid Phase-Change Heat Transfer

作　　者：刘晓燕[1] 张楠迪 姜卉 李从 周正[1] 范玉泽 李晓庆[1] LIU Xiao-yan;ZHANG Nan-di;JIANG Hui;LI Cong;ZHOU Zheng;FAN Yu-ze;LI Xiao-qing(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学土木建筑工程学院,大庆163318

出　　处：《当代化工》2021年第8期1779-1783,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金面上项目(项目编号:52076036);东北石油大学国家自然基金重点培育项目(项目编号:2018GPZD-01)。

摘　　要：固液相变传热过程在各个领域有着重广泛的应用,为深入研究固液相变传热过程特性,对格子Boltzmann方法在解决固液相变传热问题的相关模型进行了介绍。重点分析了基于焓法及伪焓法的固液相变LB模型,接着指出了基于焓法的LB模型可以根据焓值直接追踪相界面但需要迭代计算,而基于伪焓法的LB模型通过"预测"和"修正"无须进行迭代但将源项完全根据显热计算,从而改变了能量方程的形式,并未考虑潜热影响。对模型的对比分析,为解决固液相变相关问题提供指导与借鉴作用。The solid-liquid phase change heat transfer has important applications in various fields. In this paper, the lattice Boltzmann method in solving the solid-liquid phase change heat transfer problem was analyzed. And the analysis of the solid-liquid phase transition lattice Boltzmann(LB) model based on enthalpy method and pseudo-enthalpy method was carried out. It was pointed out that the enthalpy-based LB method can directly track the phase interface according to the enthalpy but needing iterative calculation. The pseudo-enthalpy-based LB model can use “prediction” and “correction” to calculate without iteration. But the source term was completely calculated based on the sensible heat, which changed the form of the energy equation and did not consider the effect of latent heat. The analysis of the model provides guidance and reference for solving the problem of solid-liquid phase transition.

关 键 词：传热 固液相变 数值模拟 格子BOLTZMANN 模型 

分 类 号：TQ021.2[化学工程]