Drift diffusion comsol tutorial pdf

This tutorial aims to assist students in the mass transfer course separation processes i in the bsc in chemical engineering at the university. The cell puts two different laminar streams in contact for a controlled period of time. Tutorial on using comsol to model transient diffusion. This model simulates an hshaped microcell designed for controlled diffusive mixing. Particle diffusion in a fluid is modeled with the diffusion equation and the particle tracing for fluid flow interfaces and the results are compared. Drift diffusion model ddm was used for determining the ed across the ground and. The commercial software package comsol multiphysics is frequently. Controlled diffusion micromixer comsol multiphysics. Drift of space charge produced by glow corona during.

Comsol is the developer of comsol multiphysics software, an interactive environment for modeling and simulating scientific and engineering problems. Tutorial on comsol with post processing for mass transfer in a. Comsol, comsol multiphysics, comsol reaction engineering lab, and. The comsol sales and support teams are available for answering any questions you may have regarding this. First electron and holes are generated in center by light. An example of such situation is considered in chapter 5 as a study case. This is the measure of the rate of the diffusion process. User interface for the boltzmann dc glow discharge example app showing the results.

Electrons are released due to thermionic emission on the. Fluid model of inductively coupled plasma etcher based on comsol. For the gas phases velocity field, a drift velocity is added. Time dependent diffusion of species from line source in. The module is based on the driftdiffusion equations, using isothermal or. The drift diffusion interface solves a pair of reactionadvection diffusion equations, one for the electron density and the other for the mean electron energy. For example, thermal effects within a power device can be simulated by adding a. Pdf fluid model of inductively coupled plasma etcher. Then voltage applied and electron and hole clouds move in different directions. Global definitions parameters 1 in the model builder window, rightclick global definitions and choose parameters. In the following text is summarized the implementation of a model 1d silicon diodes in the program comsol multiphysics in version.