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VLSI Design
Volume 13 (2001), Issue 1-4, Pages 329-334

An Upstream Flux Splitting Method for Hydrodynamic Modeling of Deep Submicron Devices

1Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148, USA
2Department of Electrical Engineering, University of New Orleans, New Orleans, LA 70148, USA
3Dept. of Electrical and Computer Engineering, Clarkson University, Box 5720, Potsdam, New York 13699-5720, USA
4Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA

Copyright © 2001 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The advective upstream splitting method (AUSM) developed for fluid dynamics problems has been applied to solving hydrodynamic semiconductor equations coupled with the Poisson’s equation. In the AUSM, the flux vectors of a fluid system are split into a convective component and a diffusive pressure component. Discretization of these two physically distinct fluxes is thus performed separately in AUSM. Application of the developed hydrodynamic AUSM to a GaAs MESFET with a gate length of 0.1 μm has demonstrated its simplicity, efficiency and effectiveness in dealing with the highly nonlinear hydrodynamic device system.