IMECH-IR  > 流固耦合系统力学重点实验室
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; Liu, MB (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
2013-11-30
Volume73Issue:9Pages:813-829
ISSN0271-2091
AbstractIn 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.
KeywordIncompressible Sph Weakly Compressible Sph Free Surface Flows Fluid-structure Interaction
Subject Area计算流体力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000325457000003
Funding OrganizationNational 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
DepartmentLMFS冲击与耦合效应(LHO)
ClassificationQ3
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47506
Collection流固耦合系统力学重点实验室
Corresponding AuthorLiu, MB (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Recommended Citation
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,&Liu, MB .(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.
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