Results 101 to 110 of about 11,516 (229)

A higher order numerical method for transonic flows [PDF]

, 1997
This thesis presents and verifies a numerical method for solving the compressible Euler equations. The method is based on a finite volume method with an upwind type TVD dissipation terms originally developed by Harten ( 1983 ) for scalar hyperbolic ...
Chen, Bo
core  

Algebraic Multigrid Based Preconditioning Approaches for Generalized Continuum Models and Indirect Displacement Control Techniques

International Journal for Numerical Methods in Engineering, Volume 127, Issue 6, 30 March 2026.
ABSTRACT The contribution deals with algebraic multigrid (AMG) based preconditioning methods for the iterative solution of a coupled linear system of equations arising in numerical simulations of failure of quasi‐brittle materials using generalized continuum approaches.
Nasser Alkmim, Peter Gamnitzer, Alexander Dummer, Matthias Neuner, Günter Hofstetter   +4 more
wiley   +1 more source

DG P-Multigrid. Efficient Solvers and Complex Applications

, 2009
These lecture notes will focus on some efficiency-related topics relevant to an effective implementation of the p-multigrid technique, presented in the lecture notes “p-Multigrid For Discontinuous Galerkin Methods”, in a high-order DG method.
REBAY, Stefano, BASSI, Francesco, F. BASSI   +2 more
core   +1 more source

Uma nova abordagem baseada em wavelets para o método multigrid algébrico: parte II – Algoritmo paralelo

Exacta, 2008
Neste trabalho, apresenta-se um novo algoritmo paralelo para o método multigrid algébrico com base em wavelets (PWAMG). Uma variação do algoritmo padrão de paralelização da transformada wavelet discreta é usada na construção de uma hierarquia de matrizes
Fabio Henrique Pereira, Silvio Ikuyo Nabeta   +1 more
doaj   +1 more source

Learning Relaxation for Multigrid

CoRR, 2022
During the last decade, Neural Networks (NNs) have proved to be extremely effective tools in many fields of engineering, including autonomous vehicles, medical diagnosis and search engines, and even in art creation. Indeed, NNs often decisively outperform traditional algorithms.
openaire   +2 more sources

Operator dependent interpolation in algebraic multigrid

, 2022
S.189 ...
Krechel, A., Stüben, K.
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Parallelization and adaptive grids for industrial aerodynamic multigrid codes

, 2022
S.113 ...
Oosterlee, C., Schüller, A., Wu, J., Ritzdorf, H., Schwichtenberg, H., Steckel, B.   +5 more
core   +1 more source

Kinematics of Multigrid Monte Carlo

, 1992
We study the kinematics of multigrid Monte Carlo algorithms by means of acceptance rates for nonlocal Metropolis update proposals. An approximation formula for acceptance rates is derived. We present a comparison of different coarse-to-fine interpolation
Monte Carlo, Kinematics Multigrid, Martin Grabenstein, Klaus Pinn   +3 more
core  

Stochastic volatility models for ordinal valued time series with application to finance [PDF]

, 2006
In this paper we introduce two stochastic volatility models where the response variable takes on only finite many ordered values. Corresponding time series occur in high-frequency finance when the stocks are traded on a coarse grid.
Müller, Gernot, Czado, Claudia, Müller, Gernot J.   +2 more
core   +1 more source

Efficient upwind algorithms for solution of the Euler and Navier-stokes equations [PDF]

, 1995
An efficient three-dimensionasl tructured solver for the Euler and Navier-Stokese quations is developed based on a finite volume upwind algorithm using Roe fluxes. Multigrid and optimal smoothing multi-stage time stepping accelerate convergence.
McNeil, C. Y., McNeil, C
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