Introduction to Modeling Plasma with CFD and Heat Transfer
In this final part of our course on modeling plasma using COMSOL Multiphysics®and the Plasma Module, we talk about how thePlasmainterface can be combined withFluid FlowandHeat Transferinterfaces to model background gas flow and heating as well as simulate heat transfer in the materials surrounding a plasma. In addition, you will get a look at thePlasmainterface settings that enable you to calculate thermodynamic properties and how the temperature, material properties of the plasma gas, and heat source of reaction are all computed. We also show how you can account for convection in thePlasmainterface.
From there, we discuss how to couple plasma with CFD. For instance:
- Add aFluid Flowphysics interface. Its material properties can be automatically coupled with thePlasmainterface.
- Add the appropriate boundary conditions (theInletandOutletboundary conditions) in thePlasmainterface as subnodes to theSpeciesnodes.
Similarly, we talk about the typical approach you would use to couple plasma with heat transfer. For instance:
- If you want to compute the temperature of your background gas, add theHeat Transfer in Fluidsinterface.
- Add aHeat Sourcedomain feature if you want to account for the heat due to reactions — the heat source can automatically be coupled with thePlasmainterface.
After this overview, we go over the model setup of theThermal Plasmatutorial model. We show exactly how the plasma model is coupled with CFD and heat transfer. Following this is a detailed discussion about theCorona Dischargeinterface andElectrical Breakdown Detectioninterface, covering what each interface solves for and how. The multiphysics couplings included in the former interface as well as theCathodeboundary condition from the latter interface are also highlighted.
Lastly, we talk about the ion energy distribution function (IEDF) and discuss finding the distribution of ions, using theIEDF in a CCP reactormodel as an example.
Further Learning
We encourage you to continue learning about multiphysics couplings by going over our course ondefining multiphysics models.
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