Dual-time smoothed particle hydrodynamics for incompressible fluid simulation

被引：7
|
作者：
Ramachandran, Prabhu [1 ]
Muta, Abhinav [1 ]
Ramakrishna, M. [2 ]
机构：
[1] Indian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, India
[2] Indian Inst Technol Madras, Dept Aerosp Engn, Chennai 600036, Tamil Nadu, India
来源：
COMPUTERS & FLUIDS | 2021年 / 227卷
关键词：
SPH; Dual-time stepping; Incompressible fluid flow; FREE-SURFACE FLOWS; ARTIFICIAL COMPRESSIBILITY; NUMERICAL-SIMULATION; MULTIPHASE FLOWS; SPH; STABILITY; SCHEME;
D O I：
10.1016/j.compfluid.2021.105031
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this paper we propose a dual-time stepping scheme for the Smoothed Particle Hydrodynamics (SPH) method. Dual-time stepping has been used in the context of other numerical methods for the simulation of incompressible fluid flows. Here we provide a scheme that combines the entropically damped artificial compressibility (EDAC) along with dual-time stepping. The method is accurate, robust, and demonstrates up to seven times better performance than the standard weakly-compressible formulation. We demon-strate several benchmarks showing the applicability of the scheme. In addition, we provide a completely open source implementation and a reproducible manuscript. (c) 2021 Elsevier Ltd. All rights reserved.
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页数：19
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