基于有限体积虚拟区域方法的两相流动直接模拟

doi:10.19596/j.cnki.1001-246x.7849

计算物理 ›› 2019, Vol. 36 ›› Issue (3): 291-297.DOI: 10.19596/j.cnki.1001-246x.7849

基于有限体积虚拟区域方法的两相流动直接模拟

张珑慧, 由长福

清华大学能源与动力工程系, 北京 100084

收稿日期:2018-03-05 修回日期:2018-04-18 出版日期:2019-05-25 发布日期:2019-05-25
通讯作者: 由长福,E-mail:youcf@tsinghua.edu.cn
作者简介:张珑慧(1989-),女,博士研究生,主要从事气固两相流直接数值模拟方法研究,E-mail:newzhanglonghui@126.com
基金资助:
国家自然科学基金（51394093）资助项目

A Fictitious Domain Method Based on Finite Volume Scheme for Particulate Flows

ZHANG Longhui, YOU Changfu

Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China

Received:2018-03-05 Revised:2018-04-18 Online:2019-05-25 Published:2019-05-25

摘要/Abstract

摘要： 为提高计算效率，提出有限体积法离散下的虚拟区域颗粒两相流动直接模拟方法.在控制方程中加入相应的虚拟区域源项，保证了颗粒内部的刚体运动特性.该源项中含有颗粒信息部分及流体信息部分.在每次迭代后，对源项中的流体信息部分进行更新，从而更好地保证颗粒内速度的刚体分布.计算静止颗粒圆柱绕流及单个颗粒的沉降过程，验证了算法的准确性.

关键词: 计算流体力学, 两相流, 虚拟区域法, 直接数值模拟, 有限体积法

Abstract: This research aims to develop a fictitious domain method based on finite volume discretization. The main idea is to add a source term in the momentum equation, which can apply rigid body constraint on domains covered by particles. The source term includes both particle and fluid information inside. It shows that by refreshing fluid information after each iteration, rigidity of solid can be preserved. This finite volume method is then verified by simulations of several cases and comparing results with literatures, which proves accuracy of the method.

Key words: computational fluid dynamics, two-phase flow, fictitious domain method, direct numerical simulation, finite volume method

中图分类号:

张珑慧, 由长福. 基于有限体积虚拟区域方法的两相流动直接模拟[J]. 计算物理, 2019, 36(3): 291-297.

ZHANG Longhui, YOU Changfu. A Fictitious Domain Method Based on Finite Volume Scheme for Particulate Flows[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2019, 36(3): 291-297.

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基于有限体积虚拟区域方法的两相流动直接模拟

A Fictitious Domain Method Based on Finite Volume Scheme for Particulate Flows

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