Two modern hyperbolic methods - a second-order Gudunov method in the software package CLAWPACK and the second-order Nessyahu - Tadmor - Kurganov (NTK) central scheme-are compared for simulating an electron shock wave in the classical hydrodynamic model for semiconductor devices. The NTK central scheme, which does not employ Riemann problem solutions, is described in detail. Special attention is paid in both methods to handling the source terms in the hydrodynamic model. CLAWPACK incorporates the source terms by a splitting method, while our version of the NTK scheme is unsplit.
- Hyperbolic central schemes
- NTK central scheme
- Numerical methods for hyperbolic PDEs
ASJC Scopus subject areas
- Hardware and Architecture
- Computer Graphics and Computer-Aided Design
- Electrical and Electronic Engineering