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DC Glow in a planar geometry initialisation
Posted Aug 12, 2017, 11:32 a.m. EDT Plasma Physics, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 5.2a 2 Replies
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The model seems right but it (Study 2) fails to find consistant initial values even with zero voltage at the terminal suffers from a "divided by zero" error. I cannot figure out how to debug this error.
I have tried steps such as massivley increasing the extent of the argon and substrate regions to avoid significant voltage at the boundries, removing all voltage from the terminal, a variety of initial electron counts and voltages, varying film height and electrode seperation, switching solver, using a finer mesh, and initialising using a stationary solution (which is obviously inapplicable for a plasma simulation). Is there a way to step through the last few itterations of the initialisation to find where the error is occuring?
Can anyone suggest anything which may solve this issue?
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I made these changes and the model no longer displays the "fails to find consistant initial values" error.
=> I have enabled for Ar initial value from mass constraints
=> I have enabled for Ar+ initial value from electro-neutrality constraints
=> Initial electron density to 1e13 1/m3
=> Solvers: maximum number of iterations = 100
Good luck
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In Plasma module the error "divided by zero" is usually caused by improper ICs for species.