In this paper, we solve by a finite difference upwinded method an extended hydrodynamic model for semiconductors, with viscous terms in the momentum equation. In particular, we consider the simulation of a one-dimensional n+-n -n+ diode, whose solution exhibits at low temperatures strong discontinuities, and investigate the effect of the momentum viscosity on the shock waves. Numerical experiments, performed also on a two-dimensional test case, demonstrate that the numerical scheme, working on non-uniform grids, is suitable to describe solutions with strong variations in time and space. Well-posedness for the boundary conditions is discussed, and a linear stability estimate is established for the one-dimensional n+-n -n+ diode benchmark problem. © 2003, MCB UP Limited

Ballestra L., Saleri F. (2003). Numerical solutions of a viscous-hydrodynamic model for semiconductors: The supersonic case. COMPEL, 22(2), 205-230 [10.1108/03321640310459171].

Numerical solutions of a viscous-hydrodynamic model for semiconductors: The supersonic case

Ballestra L.;
2003

Abstract

In this paper, we solve by a finite difference upwinded method an extended hydrodynamic model for semiconductors, with viscous terms in the momentum equation. In particular, we consider the simulation of a one-dimensional n+-n -n+ diode, whose solution exhibits at low temperatures strong discontinuities, and investigate the effect of the momentum viscosity on the shock waves. Numerical experiments, performed also on a two-dimensional test case, demonstrate that the numerical scheme, working on non-uniform grids, is suitable to describe solutions with strong variations in time and space. Well-posedness for the boundary conditions is discussed, and a linear stability estimate is established for the one-dimensional n+-n -n+ diode benchmark problem. © 2003, MCB UP Limited
2003
Ballestra L., Saleri F. (2003). Numerical solutions of a viscous-hydrodynamic model for semiconductors: The supersonic case. COMPEL, 22(2), 205-230 [10.1108/03321640310459171].
Ballestra L.; Saleri F.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/838169
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