Výsledky vyhledávání - "MANTEUFFEL, T. A."

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Constrained Optimization for Liquid Crystal Equilibria: Extended Results

Autor: Adler, J. H., Emerson, D. B., MacLachlan, S. P., Manteuffel, T. A.

This paper investigates energy-minimization finite-element approaches for the computation of nematic liquid crystal equilibrium configurations. We compare the performance of these methods when the necessary unit-length constraint is enforced by eithe

Externí odkaz: http://arxiv.org/abs/1412.8056

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First-Order System Least Squares and the Energetic Variational Approach for Two-Phase Flow

Autor: Adler, J. H., Brannick, J., Liu, C., Manteuffel, T., Zikatanov, L.

This paper develops a first-order system least-squares (FOSLS) formulation for equations of two-phase flow. The main goal is to show that this discretization, along with numerical techniques such as nested iteration, algebraic multigrid, and adaptive

Externí odkaz: http://arxiv.org/abs/1009.5711

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Adaptive multigrid algorithm for the lattice Wilson-Dirac operator

Autor: Babich, R., Brannick, J., Brower, R. C., Clark, M. A., Manteuffel, T. A., McCormick, S. F., Osborn, J. C., Rebbi, C.

Publikováno v: Phys.Rev.Lett.105:201602,2010

We present an adaptive multigrid solver for application to the non-Hermitian Wilson-Dirac system of QCD. The key components leading to the success of our proposed algorithm are the use of an adaptive projection onto coarse grids that preserves the ne

Externí odkaz: http://arxiv.org/abs/1005.3043

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The removal of critical slowing down

Autor: Clark, M. A., Brannick, J., Brower, R. C., McCormick, S. F., Manteuffel, T. A., Osborn, J. C., Rebbi, C.

Publikováno v: PoS LATTICE2008:035,2008

We present promising initial results of our adaptive multigrid solver developed for application directly to the non-Hermitian Wilson-Dirac system in 4 dimensions, as opposed to the solver developed in [1] for the corresponding normal equations. The k

Externí odkaz: http://arxiv.org/abs/0811.4331

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