MULTIGRID

作品数：102被引量：130H指数：6
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相关领域：理学更多>>
相关作者：王玉娟陈云飞段传林阮海林刘芳更多>>
相关机构：东南大学北京应用物理与计算数学研究所中南大学中国科学院更多>>
相关期刊：《Journal of Meteorological Research》《Journal of Thermal Science》《Wuhan University Journal of Natural Sciences》《Transactions of Nanjing University of Aeronautics and Astronautics》更多>>
相关基金：国家自然科学基金国家重点基础研究发展计划国家教育部博士点基金美国国家科学基金更多>>
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A CELL-CENTERED MULTIGRID SOLVER FOR THE FINITE VOLUME DISCRETIZATION OF ANISOTROPIC ELLIPTIC INTERFACE PROBLEMS ON IRREGULAR DOMAINS
《Journal of Computational Mathematics》2025年第1期18-42,共25页Kejia Pan Xiaoxin Wu Hongling Hu Zhilin Li 
supported by the National Natural Science Foundation of China(Grant No.42274101);X.X.Wu was supported by the Fundamental Research Funds for the Central Universities of Central South University(Grant No.2020zzts354);H.L.Hu was supported by the National Natural Science Foundation of China(Grant No.12071128);by the Natural Science Foundation of Hunan Province(Grant No.2021JJ30434);Z.L.Li was supported by a Simons Grant No.633724.
The aim of this paper is to develop a fast multigrid solver for interpolation-free finite volume (FV) discretization of anisotropic elliptic interface problems on general bounded domains that can be described as a uni...
关键词：Elliptic interface problem Discontinuous coefficients Anisotropic coefficients Cascadic multigrid method Richardson extrapolation 
A Multigrid Discretization of Discontinuous Galerkin Method for the Stokes Eigenvalue Problem
《Communications in Computational Physics》2023年第10期1391-1419,共29页Ling Ling Sun Hai Bi Yidu Yang 
supported by the National Natural Science Foundation of China(Nos.12261024,11561014);the Science and Technology Planning Project of Guizhou Province(Guizhou Kehe fundamental research-ZK[2022]No.324).
In this paper,based on the velocity-pressure formulation of the Stokes eigenvalue problemin d-dimensional case(d=2,3),we propose amultigrid discretization of discontinuous Galerkin method using P_(k)-P_(k)-1 element(k...
关键词：Stokes eigenvalue problem discontinuous Galerkin method multigrid discretizations adaptive algorithm 
Uniform Convergence of Multigrid V-Cycle on Adaptively Refined Finite Element Meshes for Elliptic Problems with Discontinuous Coefficients
《Communications in Mathematical Research》2023年第3期437-475,共39页Haijun Wu Weiying Zheng 
supported by the NSF of China (Grant Nos.12171238,12261160361);supported in part by the China NSF for Distinguished Young Scholars (Grant No.11725106);by the China NSF major project (Grant No.11831016).
The multigrid V-cycle methods for adaptive finite element discretizations of two-dimensional elliptic problems with discontinuous coefficients are considered.Under the conditions that the coefficient is quasi-monotone...
关键词：MULTIGRID adaptive finite elements elliptic problems discontinuous coefficients uniform convergence 
An Efficient Nonlinear Multigrid Solver for the Simulation of Rarefied Gas Cavity Flow
《Communications in Computational Physics》2023年第7期357-391,共35页Zhicheng Hu Guanghan Li 
partially supported by the National Natural Science Foundation of China,No.12171240;the Fundamental Research Funds for the Central Universities,China,No.NS2021054.
We study efficient simulation of steady state for multi-dimensional rarefied gas flow,which is modeled by the Boltzmann equation with BGK-type collision term.A nonlinear multigrid solver is proposed to resolve the eff...
关键词：Boltzmann equation moment method MULTIGRID rarefied gas flow steady state 
Numerical Solution for Thermal Elastohydrodynamic Lubrication of Line Contact with Couple Stress Fluid as Lubricant
《Journal of Mechanical Materials and Mechanics Research》2023年第1期22-35,共14页Vishwanath B.Awati Mahesh Kumar N N.M.Bujurke 
In this paper,the detailed analysis of the influence of thermal and non-Newtonian aspects of lubricant(couple stress fluid)on EHL line contact as a function of slide-roll ratio is presented.The novel low complexity FA...
关键词：Thermal EHL Slide-roll ratio Couple stress fluid Multigrid FAS Non-Newtonian 
Floating Solid Particles Interacting with Tilted Square Obstacles in Fluid Affecting Drag Forces
《Advances in Applied Mathematics and Mechanics》2023年第2期359-375,共17页K.Usman S.Jabeen M.Shahid 
We have analyzed the kinetics of solid circular particles interacting with fluid,outer boundary and internal square shaped obstacles tilted at a 45°angle.The effects on the motion of particle due to collision with ob...
关键词：Particulate flow direct numerical simulation fictitious boundary method finite element method MULTIGRID SEDIMENTATION 
Sound speed profiles in high spatiotemporal resolution using multigrid three-dimensional variational method:a coastal experiment off northern Shandong Peninsula
《Journal of Oceanology and Limnology》2023年第1期57-71,共15页Guangchao HOU Jingsheng ZHAI Qi SHAO Yanling ZHAO Wei LI Guijun HAN Kangzhuang LIANG 
Supported by the National Natural Science Foundation of China(No.41876014);the Open Project of Tianjin Key Laboratory of Oceanic Meteorology(No.2020TKLOMYB04)。
It is essential to ac quire sound speed profiles(SSPs)in high-precision spatiotemporal resolution for undersea acoustic activities.However,conventional observation methods cannot obtain high-resolution SSPs.Besides,S ...
关键词：space-time multigrid 3DVar sound speed profiles temperature SALINITY spatiotemporal correlation multiscale 
Matrix-Free Higher-Order Finite Element Method for Parallel Simulation of Compressible and Nearly-Incompressible Linear Dedicated to Professor Karl Stark Pister for his 95th birthday Elasticity on Unstructured Meshes
《Computer Modeling in Engineering & Sciences》2021年第12期1283-1303,共21页Arash Mehraban Henry Tufo Stein Sture Richard Regueiro 
The research relied on computational resources[29]provided by the University of Colorado Boulder Research Computing Group,which is supported by the National1302 CMES,2021,vol.129,no.3 Science Foundation(Awards ACI-1532235 and ACI-1532236);University of Colorado Boulder,and Colorado State University.
Higher-order displacement-based finite element methods are useful for simulating bending problems and potentially addressing mesh-locking associated with nearly-incompressible elasticity,yet are computationally expens...
关键词：MATRIX-FREE HIGHER-ORDER finite element parallel linear elasticity multigrid solvers unstructured meshes 
China Ocean ReAnalysis(CORA)version 1.0 products and validation for 2009-18被引量：2
《Atmospheric and Oceanic Science Letters》2021年第5期37-41,共5页Guofang Chao Xinrong Wu Lianxin Zhang Hongli Fu Kexiu Liu Guijun Han 
supported by grants from the National Key Research and Development Program of China [grant numbers 2016YFC1401800,2017YFC1404103,2016YFC1401701,and 2019YFC1510000];the National Natural Science Foundation of China [grant number 41976019];the Tianjin Natural Science Foundation [grant number 18JCQNJC01200]。
China Ocean ReAnalysis(CORA) version 1.0 products for the period 2009-18 have been developed and validated.The model configuration and assimilation algorithm have both been updated compared to those of the 51-year(195...
关键词：China Ocean ReAnalysis(CORA) VALIDATION Multigrid 3D-Var assimilation 
High Order of Accuracy for Poisson Equation Obtained by Grouping of Repeated Richardson Extrapolation with Fourth Order Schemes
《Computer Modeling in Engineering & Sciences》2021年第8期699-715,共17页Luciano Pereira da Silva Bruno Benato Rutyna Aline Roberta Santos Righi Marcio Augusto Villela Pinto 
In this article,we improve the order of precision of the two-dimensional Poisson equation by combining extrapolation techniques with high order schemes.The high order solutions obtained traditionally generate non-spar...
关键词：Tenth order accuracy RRE compact scheme exponential scheme MULTIGRID finite difference 
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