Drift Diffusion Tutorial

Application ID: 8643

The Drift Diffusion interface solves a pair of reaction/advection/diffusion equations, one for the electron density and the other for the mean electron energy.

This tutorial example computes the electron number density and mean electron energy in a drift tube. Electrons are released due to thermionic emission on the left boundary with an assumed mean electron energy. The electrons are then accelerated towards the right boundary due to an imposed external electric field which is oriented in the opposite direction from the electron drift velocity.

This model example illustrates applications of this type that would nominally be built using the following products: