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首页> 外文期刊>Journal of Computational Physics >A parallel Eulerian interface tracking/Lagrangian point particle multi-scale coupling procedure
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A parallel Eulerian interface tracking/Lagrangian point particle multi-scale coupling procedure

机译:并行欧拉界面跟踪/拉格朗日点粒子多尺度耦合过程

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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.
机译:本文提出了两相流的并行欧拉/拉格朗日多尺度耦合过程。在完全解决的规模上,使用欧拉方法跟踪动态演化的相位界面。在无法充分解决相界面几何形状的流动区域中,通过拉格朗日点粒子方法描述了分离的小规模液体结构。这两个描述的耦合过程包括一个有效的并行算法,该算法可识别跟踪的液体候选结构,将其从解析的欧拉描述中删除,然后将其插入到拉格朗日描述中,以保留其位置,质量,动量和低阶形状。尽管原则上适用于完全解析的比例的水平集,流体体积和标记物颗粒界面跟踪方法,但本文重点介绍了使用改进的水平集网格方法进行雾化模拟的示例。

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