Plasma Module Updates
For users of the Plasma Module, COMSOL Multiphysics® version 5.5 brings improved electron energy distribution function (EEDF) functionality, a new physics interface for modeling electrostatic precipitators, and a new physics interface to detect whether electrical breakdown will occur. Learn about these and more plasma updates below.
Electron Energy Distribution Function
Previously, the electron energy distribution function (EEDF) needed to be an assumed function. In version 5.5, it is possible to compute the EEDF for space-dependent models using a two-term approximation of the Boltzmann equation. You can see this new functionality in the GEC ICP Reactor Coupled with the Two-Term Boltzmann Equation model.
New Tools for Modeling Electrostatic Precipitators
A new physics interface, Corona Discharge, uses an approximate method to compute the charge distribution, making it easier to solve than a fully self-consistent plasma model. A new Charge Accumulation feature is available in the Particle Tracing Module that computes the accumulation of charge on particles as they travel through a fluid with nonzero space charge density. These tools can be used to efficiently model electrostatic precipitators. You can see these new features in the Electrostatic Precipitator and Positive and Negative Corona Discharges models.
New Physics Interface for Detecting Electrical Breakdown
A new physics interface, Electrical Breakdown Detection, integrates the Townsend coefficient along electric field lines to predict whether electrical breakdown will occur. This method is faster than a self-consistent plasma model and can show where electrical breakdown could occur in a given design. You can see this new feature in the Electrical Breakdown Between Two Spheres model.
New Tutorial Models
Version 5.5 brings several new tutorial models.
Electrostatic Precipitator
Application Library Title:
electrostatic_precipitator
Download from the Application Gallery
Positive and Negative Corona Discharges
Application Library Title:
positive_and_negative_corona_discharges
Download from the Application Gallery
DC Glow Discharge Coupled with the Two-Term Boltzmann Equation
Application Library Title:
positive_column_1d_boltzmann
Download the Application Gallery
GEC ICP Reactor Coupled with the Two-Term Boltzmann Equation
Application Library Title:
argon_gec_icp_boltzmann
Download from the Application Gallery
Electrical Breakdown Between Two Spheres
Application Library Title:
breakdown_between_spheres
Download from the Application Gallery