Analysis of Spurious Velocity Overshoot in Hydrodynamic Simulations

摘要

The detailed physical and mathematical causes of the spurious velocity overshootspike, observed in hydrodynamic simulations of nin diodes, are investigated. The magnitude of the spike is related to the variation of the heat conduction coefficient in the conventional formulation. Results obtained using a recently proposed energy transport model are presented which show virtually no spurious spike without any adhoc parameter variation.