Výsledky vyhledávání - "Multigrid algorithm"

On Two Multigrid Algorithms for Modeling Variational Multiphase Image Segmentation Autor Badshah, N., Ke Chen

“…In this paper, we present two related multigrid algorithms for multiphase image segmentation…”
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On High-Order Denoising Models and Fast Algorithms for Vector-Valued Images Autor Brito-Loeza, Carlos, Chen, Ke

“… Their properties are analyzed and a fast multigrid algorithm for the numerical solution is provided…”
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Efficient and accurate time adaptive multigrid simulations of droplet spreading Autor Gaskell, P. H., Jimack, P. K., Sellier, M., Thompson, H. M.

“…An efficient full approximation storage (FAS) Multigrid algorithm is used to solve a range of droplet spreading flows modelled as a coupled set of non…”
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Parallel N-Body Simulation Based on the PM and P3M Methods Using Multigrid Schemes in conjunction with Generic Approximate Sparse Inverses Autor Kyziropoulos, P. E., Gravvanis, G. A., Filelis-Papadopoulos, C. K.

“… method in conjunction with Generic Approximate Sparse Inverses. The N-Body problem resides in a three-dimensional torus space, and the bodies are subject only to gravitational forces…”
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Nonlinear multigrid for the solution of large-scale Riccati equations in low-rank and ℋ︁-matrix format Autor Grasedyck, L.

“…). We provide a nonlinear multigrid algorithm that computes the solution X in a data‐sparse, low‐rank format and has a…”
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Energy Optimization of Algebraic Multigrid Bases Autor Mandel, J., Brezina, M., Vaněk, P.

“…We propose a fast iterative method to optimize coarse basis functions in algebraic multigrid by minimizing the sum of their energies, subject to the condition that linear combinations of the basis…”
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ADAPTIVE LINEARIZATION AND GRID ITERATIONS WITH THE TRI-TREE MULTIGRID REFINEMENT-RECOARSEMENT ALGORITHM FOR THE NAVIER-STOKES EQUATIONS Autor Wille, Svenøivind

“… In the tri‐tree multigrid algorithm the solution from a coarser grid is scaled…”
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Tractability of Complex Control Systems Autor Lessard, Laurent

“… telescopes.Our contribution is a warm-started single-iteration multigrid algorithm that performs as well as conventional vector-matrix-multiplication methods, but at a fraction of the computational cost…”
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N-body simulation based on the Particle Mesh method using multigrid schemes Autor Kyziropoulos, P. E., Filelis-Papadopoulos, C. K., Gravvanis, G. A.

“… space variables, subject to a variety of boundary conditions. Due to their efficiency and convergence behavior, multigrid methods are used in many scientific fields as solvers or preconditioners…”
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The numerical simulation of thin film flow over heterogeneous substrates Autor Sellier, Mathieu

“…Considerable progress in the understanding of thin film flow over surfaces has been achieved thanks to lubrication theory which enables the governing…”
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Fast Numerical Solution of Time-Periodic Parabolic Problems by a Multigrid Method Autor Hackbusch, Wolfgang

“… In this paper we propose a multigrid algorithm. It is a very fast iterative method. The algorithm can easily be generalized to nonlinear problems and to conditions of the type $y( \cdot ,0) = A(y( \cdot…”
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Calcul des ecoulements compressibles turbulents sur des maillages non-structures Autor Benmeddour, Ali

“… turbulent flows, a relatively unexplored subject. We are mainly interested in the numerical prediction of external, steady and 2-D flows…”
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