A parallel Eulerian interface tracking/Lagrangian point particle multi-scale coupling procedure
A parallel Eulerian interface tracking/Lagrangian point particle multi-scale coupling procedure
复制标题
DOI：
10.1016/j.jcp.2009.10.009
复制
发表时间：
2010-02-01
影响因子：
4.1
通讯作者：
Herrmann, M.
中科院分区：
文献类型：
--
作者：
Herrmann, M.
本文提出了两相流的并行欧拉/拉格朗日多尺度耦合程序。在完全解析的尺度上，使用欧拉方法跟踪动态演变的相界面。在流动区域中，相界面几何形状无法再充分解析，分离的小规模液体结构通过拉格朗日点粒子方法进行描述。这两种描述的耦合过程由一个高效的并行算法组成，该算法识别跟踪的液体候选结构，将它们从解析的欧拉描述中删除，并将它们插入到拉格朗日描述中，保留它们的位置、质量、动量和低阶形状。虽然原则上适用于完全解析尺度的水平集、流体体积和标记粒子界面跟踪方法，但本文重点介绍使用细化水平集网格方法进行雾化模拟的示例。 (C) 2009 Elsevier Inc. 保留所有权利。
This paper presents a parallel Eulerian/Lagrangian multi-scale coupling procedure for two-phase flows. At the fully resolved scale, the dynamically evolving phase interface is tracked using a Eulerian approach. In regions of the flow, where the phase interface geometry can no longer be resolved adequately, separated, small scale liquid structures are described by a Lagrangian point particle approach. The coupling procedure of these two descriptions consists of an efficient parallel algorithm that identifies tracked liquid candidate structures, removes them from the resolved Eulerian description, and inserts them into the Lagrangian description preserving their position, mass, momentum, and lower order shape. While in principle applicable to level set, Volume of Fluid, and marker particle interface tracking methods for the fully resolved scale, this paper focuses on examples from atomization simulations using the refined level set grid method. (C) 2009 Elsevier Inc. All rights reserved.