Resolved-particle simulation by the Physalis method: Enhancements and new capabilities

JOURNAL OF COMPUTATIONAL PHYSICS

卷:309

Article

Sierakowski, Adam J.¹  Prosperetti, Andrea^1,2,3 

[1] Johns Hopkins Univ, Dept Mech Engn, 3400 North Charles St, Baltimore, MD 21218 USA

[2] Univ Twente, Fac Sci & Technol, POB 217, NL-7500 AE Enschede, Netherlands

[3] Univ Twente, JM Burgers Ctr Fluid Dynam, POB 217, NL-7500 AE Enschede, Netherlands

关键词: Resolved particle numerical simulation;    Disperse multiphase flow;    Physalis method;    Spherical particle;    Computational fluid dynamics;   

DOI  :  10.1016/j.jcp.2015.12.057

来源: Elsevier

【 摘 要 】

We present enhancements and new capabilities of the Physalis method for simulating disperse multiphase flows using particle-resolved simulation. The current work enhances the previous method by incorporating a new type of pressure-Poisson solver that couples with a new Physalis particle pressure boundary condition scheme and a new particle interior treatment to significantly improve overall numerical efficiency. Further, we implement a more efficient method of calculating the Physalis scalar products and incorporate short-range particle interaction models. We provide validation and benchmarking for the Physalis method against experiments of a sedimenting particle and of normal wall collisions. We conclude with an illustrative simulation of 2048 particles sedimenting in a duct. In the appendix, we present a complete and self-consistent description of the analytical development and numerical methods. (C) 2016 Elsevier Inc. All rights reserved.

【 授权许可】

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