Results 21 to 30 of about 37,043 (186)
Journal of Advances in Modeling Earth Systems, 2021 The regional System of Multigrid Nonlinear Least Squares Four‐dimensional Variational Data Assimilation for Numerical Weather Prediction (SNAP) was recently established based on the multigrid NLS‐4DVar assimilation scheme, Weather Research and ...
Hongqin Zhang, Xiangjun Tian
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The Mixed Finite Element Multigrid Method for Stokes Equations
The Scientific World Journal, 2015 The stable finite element discretization of the Stokes problem produces a symmetric indefinite system of linear algebraic equations. A variety of iterative solvers have been proposed for such systems in an attempt to construct efficient, fast, and robust
K. Muzhinji, S. Shateyi, S. S. Motsa
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Multigrid methods for an elliptic optimal control problem with pointwise state constraints
Results in Applied Mathematics, 2023 We design multigrid methods for an elliptic distributed optimal control problem with pointwise state constraints. They are based on the P1 finite element method from Brenner et al.
Susanne C. Brenner +2 more
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Моделирование и анализ информационных систем, 2017 In the work, we consider the problem of accelerating the iteration process of the numerical solution of boundary-value problems for partial differential equations (PDE) by the method of collocations and least residuals (CLR). To solve this problem, it is
Vasily P. Shapeev, Evgenii V. Vorozhtsov
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On a Multigrid Method for Tempered Fractional Diffusion Equations
Fractal and Fractional, 2021 In this paper, we develop a suitable multigrid iterative solution method for the numerical solution of second- and third-order discrete schemes for the tempered fractional diffusion equation.
Linlin Bu, Cornelis W. Oosterlee
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Convergence Analysis of Multigrid Solver for Cahn-Hilliard Equation [PDF]
Jisuanji kexue, 2023 The Cahn-Hilliard(CH) equation is a fundamental nonlinear equation in the phase field model and is usually analyzed using numerical methods.Following a numerical discretization,we get a nonlinear equations system.The full approximation scheme(FAS) is an ...
GUO Jing, QI Deyu
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CFD Julia: A Learning Module Structuring an Introductory Course on Computational Fluid Dynamics
Fluids, 2019 CFD Julia is a programming module developed for senior undergraduate or graduate-level coursework which teaches the foundations of computational fluid dynamics (CFD).
Suraj Pawar, Omer San
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Robust Multigrid Technique [PDF]
Mathematical Models and Computer Simulations, 2003 A new robust multigrid technique for solving a large class of boundary value problems on structured grids is proposed. The technique is based on incorporation of adaption of equations to the technique, the control volume discretization and original multigrid solver into general algorithm.
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Advances in Difference Equations, 2018 In this paper, we propose an extrapolation full multigrid (EXFMG) algorithm to solve the large linear system arising from a fourth-order compact difference discretization of two-dimensional (2D) convection diffusion equations.
Ming Li, Zhoushun Zheng, Kejia Pan
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SN Applied Sciences, 2022 Article Highlights The use of a p-multigrid method significantly reduces the CPU timings for higher values of the spline degree. The Multigrid Reduction in Time method shows both strong and weak scalability up to 2048 cores.
Roel Tielen +2 more
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