#### Filter Results:

- Full text PDF available (88)

#### Publication Year

1998

2017

- This year (5)
- Last 5 years (68)
- Last 10 years (86)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

- Assyr Abdulle
- SIAM J. Scientific Computing
- 2002

Abstract. In this paper, a new family of fourth order Chebyshev methods (also called stabilized methods) is constructed. These methods possess nearly optimal stability regions along the negative real axis and a three-term recurrence relation. The stability properties and the high order make them suitable for large stiff problems, often space discretization… (More)

- Assyr Abdulle
- Multiscale Modeling & Simulation
- 2005

Heterogeneous multiscale methods have been introduced by E and Engquist [Commun. Math. Sci., 1 (2003), pp. 87–132] as a methodology for the numerical computation of problems with multiple scales. Analyses of the methods for various homogenization problems have been done by several authors. These results were obtained under the assumption that the… (More)

- A. Abdulle
- 2008

Heterogeneous multiscale methods (HMM) have been introduced by E and Engquist [Commun. Math. Sci. 1 (2003), pp. 87-132] as a general methodology for the numerical computation of problems with multiple scales. In this paper we discuss finite element methods based on the HMM for multiscale partial differential equations (PDEs). We give numerous examples of… (More)

- ASSYR ABDULLE, TIEJUN LI
- 2008

In this paper, we present a class of explicit numerical methods for stiff Itô stochastic differential equations (SDEs). These methods are as simple to program and to use as the well-known Euler-Maruyama method, but much more efficient for stiff SDEs. For such problems, it is well known that standard explicit methods face step-size reduction. While… (More)

- Assyr Abdulle, Alexei A. Medovikov
- Numerische Mathematik
- 2001

- Assyr Abdulle, Christoph Schwab
- Multiscale Modeling & Simulation
- 2005

We present a finite element method for the numerical solution of diffusion problems on rough surfaces. The problem is transformed to an elliptic homogenization problem in a two dimensional parameter domain with a rapidly oscillating diffusion tensor and source term. The finite element method is based on the heterogeneous multiscale methods of E and Engquist… (More)

- Assyr Abdulle
- 2002

In this paper, we propose a numerical method, the finite difference heterogeneous multi-scale method (FD-HMM), for solving multi-scale parabolic problems. Based on the framework introduced in [Commun. Math. Sci. 1 (1) 87], the numerical method relies on the use of two different schemes for the original equation, at different grid level which allows to give… (More)

- Assyr Abdulle, Stephane Cirilli
- SIAM J. Scientific Computing
- 2008

We present and analyze a new class of numerical methods for the solution of stiff stochastic differential equations (SDEs). These methods, called S-ROCK (for stochastic orthogonal Runge–Kutta Chebyshev), are explicit and of strong order 1 and possess large stability domains in the mean-square sense. For mean-square stable stiff SDEs, they are much more… (More)

- Assyr Abdulle, Marcus J. Grote
- Multiscale Modeling & Simulation
- 2011

For limited time the propagation of waves in a highly oscillatory medium is well-described by the non-dispersive homogenized wave equation. With increasing time, however, the true solution deviates from the classical homogenization limit, as a large secondary wave train develops unexpectedly. Here, we propose a new finite element heterogeneous multiscale… (More)

- Assyr Abdulle, Björn Engquist
- Multiscale Modeling & Simulation
- 2008

This paper is concerned with a numerical method for multiscale elliptic problems. Using the framework of the Heterogeneous Multiscale Methods (HMM), we propose a micro-macro approache which combines finite element method (FEM) for the macroscopic solver and the pseudospectral method for the micro solver. Unlike the micro-macro methods based on standard FEM… (More)