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JSCIC
2008
66views more  JSCIC 2008»
9 years 12 months ago
Substructuring Preconditioners for Mortar Discretization of a Degenerate Evolution Problem
In this paper we present new efficient variants of structured preconditioners for algebraic linear systems arising from the mortar discretization of a degenerate parabolic system o...
Micol Pennacchio, Valeria Simoncini
JSCIC
2008
59views more  JSCIC 2008»
9 years 12 months ago
Computing Derivatives of Noisy Signals Using Orthogonal Functions Expansions
In many applications noisy signals are measured. These signals has to be filtered and, sometimes, their derivative have to be computed. In this paper a method for filtering the si...
Adi Ditkowski, Abhinav Bhandari, Brian W. Sheldon
JSCIC
2008
43views more  JSCIC 2008»
9 years 12 months ago
Numerical Schemes of Diffusion Asymptotics and Moment Closures for Kinetic Equations
We investigate different models that are intended to describe the small mean free path regime of a kinetic equation, a particular attention being paid to the moment closure by entr...
José A. Carrillo, Thierry Goudon, P. Lafitt...
JSCIC
2008
32views more  JSCIC 2008»
9 years 12 months ago
A Numerical Study of Diagonally Split Runge-Kutta Methods for PDEs with Discontinuities
Colin B. Macdonald, Sigal Gottlieb, Steven J. Ruut...
JSCIC
2008
62views more  JSCIC 2008»
9 years 12 months ago
Robustness of a Spline Element Method with Constraints
The spline element method with constraints is a discretization method where the unknowns are expanded as polynomials on each element and Lagrange multipliers are used to enforce th...
Gerard Awanou
JSCIC
2008
134views more  JSCIC 2008»
9 years 12 months ago
Discontinuous Hamiltonian Finite Element Method for Linear Hyperbolic Systems
Abstract We develop a Hamiltonian discontinuous finite element discretization of a generalized Hamiltonian system for linear hyperbolic systems, which include the rotating shallow ...
Yan Xu, Jaap J. W. van der Vegt, Onno Bokhove
JSCIC
2008
101views more  JSCIC 2008»
9 years 12 months ago
An Improved Sharp Interface Method for Viscoelastic and Viscous Two-Phase Flows
We introduce a robust method for computing viscous and viscoelastic two-phase bubble and drop motions. Our method utilizes a coupled level-set and volume-of-fluid technique for upd...
P. A. Stewart, N. Lay, Mark Sussman, Mitsuhiro Oht...
JSCIC
2008
67views more  JSCIC 2008»
9 years 12 months ago
Superposition of Multi-Valued Solutions in High Frequency Wave Dynamics
The weakly coupled WKB system captures high frequency wave dynamics in many applications. For such a system a level set method framework has been recently developed to compute mult...
Hailiang Liu, Zhongming Wang
JSCIC
2008
70views more  JSCIC 2008»
9 years 12 months ago
Extracting Grain Boundaries and Macroscopic Deformations from Images on Atomic Scale
Nowadays image acquisition in materials science allows the resolution of grains at atomic scale. Grains are material regions with different lattice orientation which are frequently...
Benjamin Berkels, Andreas Rätz, Martin Rumpf,...
JSCIC
2008
64views more  JSCIC 2008»
9 years 12 months ago
An Unconditionally Stable MacCormack Method
Andrew Selle, Ronald Fedkiw, ByungMoon Kim, Yingji...
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