Results 21 to 30 of about 29,809 (206)
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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Application of multigrid NLS-4DVar in radar radial velocity data assimilation with WRF-ARW
Atmospheric and Oceanic Science Letters, 2019 The nonlinear least-squares four-dimensional variational assimilation (NLS-4DVar) method introduced here combines the merits of the ensemble Kalman filter and 4DVar assimilation methods.
Lu ZHANG, Xiangjun TIAN, Hongqin ZHANG
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Examples and Counterexamples, 2021 In this work, we consider the design of a geometric multigrid method with multiplicative Schwarz smoothers for the eddy-current problem and the time-harmonic Maxwell equations.
Sebastian Kinnewig +2 more
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Combination of Multigrid with Constraint Data for Inverse Problem of Nonlinear Diffusion Equation
Mathematics, 2023 This paper delves into a rapid and accurate numerical solution for the inverse problem of the nonlinear diffusion equation in the context of multiphase porous media flow.
Tao Liu +7 more
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A numerical solution of parabolic quasi-variational inequality nonlinear using Newton-multigrid method [PDF]
Iranian Journal of Numerical Analysis and OptimizationIn this article, we apply three numerical methods to study the L∞-convergence of the Newton-multigrid method for parabolic quasi-variational inequalities with a nonlinear right-hand side.
M. Bahi, M. Beggas, N. Nesba, A. Imtiaz
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IEEE Access, 2021 The previous work relating to the numerical-analytical coupling method for steady-state thermal analysis of the laminated PCB structure is first briefly reviewed.
Yabin Zhang
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Multigrid fourier analysis on semi‐structured anisotropic meshes for vector problems
Mathematical Modelling and Analysis, 2010 An efficient multigrid finite element method for vector problems on triangular anisotropic semi‐structured grids is proposed. This algorithm is based on zebra line‐type smoothers to overcome the difficulties arising when multigrid is applied on stretched
Francisco J. Gaspar +2 more
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Neural multigrid for gauge theories and other disordered systems [PDF]
, 1992 We present evidence that multigrid works for wave equations in disordered systems, e.g. in the presence of gauge fields, no matter how strong the disorder, but one needs to introduce a "neural computations" point of view into large scale simulations ...
Baeker, M. +3 more
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Multigrid Method for Solving Inverse Problems for Heat Equation
Mathematics, 2022 In this paper, the inverse problems for the boundary value and initial value in a heat equation are posed and solved. It is well known that those problems are ill posed.
Hassan K. Ibrahim Al-Mahdawi +5 more
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Multigrid Methods for Hellan-Herrmann-Johnson Mixed Method of Kirchhoff Plate Bending Problems
, 2017 A V-cycle multigrid method for the Hellan-Herrmann-Johnson (HHJ) discretization of the Kirchhoff plate bending problems is developed in this paper. It is shown that the contraction number of the V-cycle multigrid HHJ mixed method is bounded away from one
Chen, Long, Hu, Jun, Huang, Xuehai
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