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JCPHY
2016
61views more  JCPHY 2016»
10 years 28 days ago
Hyperbolic systems of equations posed on erroneous curved domains
The effect of an inaccurate geometry description on the solution accuracy of a hyperbolic problem is discussed. The inaccurate geometry can for example come from an imperfect CAD ...
Jan Nordström, Samira Nikkar
JCPHY
2016
47views more  JCPHY 2016»
10 years 28 days ago
The method of polarized traces for the 2D Helmholtz equation
We present a solver for the 2D high-frequency Helmholtz equation in heterogeneous acoustic media, with online parallel complexity that scales optimally as O(N L ), where N is the ...
Leonardo Zepeda-Núñez, Laurent Deman...
JCPHY
2016
50views more  JCPHY 2016»
10 years 28 days ago
Efficient spectral-Galerkin methods for fractional partial differential equations with variable coefficients
ABSTRACT. Efficient Spectral-Galerkin algorithms are developed to solve multi-dimensional fractional elliptic equations with variable coefficients in conserved form as well as no...
Zhiping Mao, Jie Shen
JCPHY
2016
38views more  JCPHY 2016»
10 years 28 days ago
On variational and symplectic time integrators for Hamiltonian systems
Various systems in nature have a Hamiltonian structure and therefore accurate time integrators for those systems are of great practical use. In this paper, a finite element metho...
E. Gagarina, Vijaya R. Ambati, S. Nurijanyan, Jaap...
JCPHY
2016
43views more  JCPHY 2016»
10 years 28 days ago
Second-order accurate finite volume method for well-driven flows
Milan Dotlic, Dragan Vidovic, B. Pokorni, M. Pusic...