A comparative study of truly incompressible and weakly compressible SPH methods for free surface incompressible flows

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	A comparative study of truly incompressible and weakly compressible SPH methods for free surface incompressible flows
	Chen Z; Zong Z; Liu MB(刘谋斌); Li HT
刊名	INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
	2013-11-30
通讯作者邮箱	liumoubin@imech.ac.cn
卷号	73 期号:9 页码:813-829
关键词	incompressible SPH weakly compressible SPH free surface flows fluid-structure interaction
ISSN号	0271-2091
通讯作者	Liu, MB (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
产权排序	[Chen, Z.; Zong, Z.; Li, H. T.] State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China; [Chen, Z.; Zong, Z.; Li, H. T.] Dalian Univ Technol, Sch Naval Architecture, Dalian 116024, Peoples R China; [Liu, M. B.] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
合作状况	国内
中文摘要	In this paper, the performance of the incompressible SPH (ISPH) method and an improved weakly compressible SPH (IWCSPH) method for free surface incompressible flows are compared and analyzed. In both methods, the Navier-Stokes equations are solved, and no artificial viscosity is used. The ISPH algorithm in this paper is based on the classical SPH projection method with common treatments on solid boundaries and free surfaces. The IWCSPH model includes some advanced corrective algorithms in density approximation and solid boundary treatment (SBT). In density approximation, the moving least squares (MLS) approach is applied to re-initialize density every several steps to obtain smoother and more stable pressure fields. An improved coupled dynamic SBT algorithm is implemented to obtain stable pressure values near solid wall areas and, thus, to minimize possible numerical oscillations brought in by the solid boundaries. Three representative numerical examples, including a benchmark test for hydrostatic pressure, a dam breaking problem and a liquid sloshing problem, are comparatively analyzed with ISPH and IWCSPH. It is demonstrated that the present IWCSPH is more attractive than ISPH in modeling free surface incompressible flows as it is more accurate and more stable with comparable or even less computational efforts.
学科主题	计算流体力学
分类号	Q3
收录类别	SCI ; EI
资助信息	National Natural Science Foundation of China [11172306, 51221961, 51279030]; National Key Basic Research Special Foundation of China [2010CB832704, 2013CB036101]; Scientific Project for High-tech Ships: Key Technical Research on the Semi-planning Hybrid Fore-body Trimaran
原文出处	http://dx.doi.org/10.1002/fld.3824
语种	英语
WOS记录号	WOS:000325457000003
公开日期	2013-11-06
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47506]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
推荐引用方式 GB/T 7714	Chen Z,Zong Z,Liu MB,et al. A comparative study of truly incompressible and weakly compressible SPH methods for free surface incompressible flows[J]. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS,2013,73(9):813-829.
APA	Chen Z,Zong Z,Liu MB,&Li HT.(2013).A comparative study of truly incompressible and weakly compressible SPH methods for free surface incompressible flows.INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS,73(9),813-829.
MLA	Chen Z,et al."A comparative study of truly incompressible and weakly compressible SPH methods for free surface incompressible flows".INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS 73.9(2013):813-829.