南方科技大学知识苑(SUSTech KC): A generalized density dissipation for weakly compressible smoothed particle hydrodynamics

题名	A generalized density dissipation for weakly compressible smoothed particle hydrodynamics
作者	Zheng, B. X.1,2 ; Cai, Z. W.3; Zhao, P. D.4,5; Xu, X. Y.6; Chan, T. S.2; Yu, P.1,7
通讯作者	Chan, T. S.; Yu, P.
发表日期	2024-08-01
DOI	10.1063/5.0216702
发表期刊	PHYSICS OF FLUIDS 影响因子和分区
ISSN	1070-6631
EISSN	1089-7666
卷号	36 期号:8
摘要	Weakly compressible smoothed particle hydrodynamics (SPH) is known to suffer from numerical pressure noise, posing challenges to simulation stability and accuracy. To address this, the present study introduces a novel density dissipation scheme aimed at suppressing such unphysical noise. The proposed solution overcomes the limitation of traditional density dissipation schemes being ineffective at fluid interfaces in multiphase flow simulations. The novel scheme is generally applicable to the entire computational domain, encompassing both single-phase flow and multiphase flow. This advancement is achieved through two key components. First, the traditional density dissipation is replaced with a density increment dissipation approach that enables dissipation to cross interfaces separating different fluids. Second, based on dissipation volume conservation, a dissipation volume correction factor is employed to stabilize simulations characterized by large density ratios. The accuracy, stability, and robustness of our method are demonstrated through direct comparisons with experimental data or numerical results in four three-dimensional benchmarks: sloshing under external excitations, the rising of single and double bubbles, Rayleigh-Taylor instability, and Kelvin-Helmholtz instability. Additionally, our study reveals the relationship between SPH utilizing density dissipation and the approximate Riemann solver.
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	第一 ; 通讯
资助项目	National Natural Science Foundation of China10.13039/501100001809[12071367] ; National Natural Science Foundation of China[2023B1212060001] ; Department of Science and Technology of Guangdong Province[315110]
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
WOS记录号	WOS:001292552900010
出版者	AIP Publishing
ESI学科分类	PHYSICS
来源库	Web of Science
引用统计
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/804678
专题	工学院_力学与航空航天工程系南方科技大学
作者单位	1.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Guangdong Prov Key Lab Turbulence Res & Applicat, Shengzhen 518055, Peoples R China 2.Univ Oslo, Dept Math, N-0851 Oslo, Norway 3.China Ship Sci Res Ctr, Wuxi 214082, Peoples R China 4.Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China 5.Dalian Univ Technol, Sch Naval Architecture & Ocean Engn, Dalian 116024, Peoples R China 6.Xian Univ Sci & Technol, Sch Comp Sci & Technol, Xian 710054, Peoples R China 7.Southern Univ Sci & Technol, Ctr Complex Flows & Soft Matter Res, Shenzhen 518055, Peoples R China
第一作者单位	力学与航空航天工程系
通讯作者单位	力学与航空航天工程系; 南方科技大学
第一作者的第一单位	力学与航空航天工程系
推荐引用方式 GB/T 7714	Zheng, B. X.,Cai, Z. W.,Zhao, P. D.,et al. A generalized density dissipation for weakly compressible smoothed particle hydrodynamics[J]. PHYSICS OF FLUIDS,2024,36(8).
APA	Zheng, B. X.,Cai, Z. W.,Zhao, P. D.,Xu, X. Y.,Chan, T. S.,&Yu, P..(2024).A generalized density dissipation for weakly compressible smoothed particle hydrodynamics.PHYSICS OF FLUIDS,36(8).
MLA	Zheng, B. X.,et al."A generalized density dissipation for weakly compressible smoothed particle hydrodynamics".PHYSICS OF FLUIDS 36.8(2024).