A Local Radial Point Interpolation Method for Dissipation Process of Excess Pore Water Pressure

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	A Local Radial Point Interpolation Method for Dissipation Process of Excess Pore Water Pressure
	Wang JG; Yan L(燕琳); Liu GR
刊名	International Journal of Numerical Methods for Heat & Fluid Flow
	2005
卷号	15 期号:5-6 页码:567-587
ISSN号	0961-5539
通讯作者	Wang, JG (reprint author), Natl Univ Singapore, Trop Marine Sci Inst, Singapore 117548, Singapore.
合作状况	国际
中文摘要	Purpose - Develop a local radial point interpolation method (LRPIM) to analyze the dissipation process of excess pore water pressure in porous media and verify its numerical capability. Design/methodology/approach - Terzaghi's consolidation theory is used to describe the dissipation process. A local residual form is formulated over only a sub-domain. This form is spatially discretized by radial point interpolation method (RPIM) with basis of multiquadrics (MQ) and thin-plate spline (TPS), and temporally discretized by finite difference method. One-dimensional (ID) and two-dimensional consolidation problems are numerically analyzed. Findings - The LRPIM is suitable, efficient and accurate to simulate this dissipation process. The shape parameters, q = 1.03, R = 0.1 for MQ and 17 = 4.001 for TPS, are still valid. Research limitations/implications - The asymmetric system matrix in LRPIM spends more resources in storage and CPU time. Practical implications - Local residual form requires no background mesh, thus being a truly meshless method. This provides a fast and practical algorithm for engineering computation. Originality/value - This paper provides a simple, accurate and fast numerical algorithm for the dissipation process of excess pore water pressure, largely simplifies data preparation, shows that the shape parameters from solid mechanics are also suitable for the dissipation process.
学科主题	力学
类目[WOS]	Thermodynamics ; Mathematics, Interdisciplinary Applications ; Mechanics
研究领域[WOS]	Thermodynamics ; Mathematics ; Mechanics
关键词[WOS]	MESHLESS METHOD
收录类别	SCI
原文出处	http://dx.doi.org/10.1108/09615530510601468
语种	英语
WOS记录号	WOS:000231580000009
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15705]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Wang JG,Yan L,Liu GR. A Local Radial Point Interpolation Method for Dissipation Process of Excess Pore Water Pressure[J]. International Journal of Numerical Methods for Heat & Fluid Flow,2005,15(5-6):567-587.
APA	Wang JG,Yan L,&Liu GR.(2005).A Local Radial Point Interpolation Method for Dissipation Process of Excess Pore Water Pressure.International Journal of Numerical Methods for Heat & Fluid Flow,15(5-6),567-587.
MLA	Wang JG,et al."A Local Radial Point Interpolation Method for Dissipation Process of Excess Pore Water Pressure".International Journal of Numerical Methods for Heat & Fluid Flow 15.5-6(2005):567-587.