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No convergence - Unless I use a constant
Posted Feb 1, 2011, 9:09 a.m. EST 1 Reply
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Hi everyone,
I need help with this transistor model I'm working on. I have defined Electrostatics and Transport of Diluted Species. I'm trying to define Space Charge Density for the electrostatics in several subdomains of the transistor to be:
Rho = {-Electron_Concentration * Elementary_Charge}.
Electron_Concentration is the Dependent Variable coming from Transport of Diluted Species. Unless I change the above equation to:
Rho = {-SomeConstantHere * Elementary_Charge}
Then I got this error: "Failed to converge, even when using minimum damping factor."
Using the constant works, but I would like to have a working version with the correct Dependent Variable of electron concentration.
How can I get it done? Should I try Linear Extrusion? Thanks! :)
I need help with this transistor model I'm working on. I have defined Electrostatics and Transport of Diluted Species. I'm trying to define Space Charge Density for the electrostatics in several subdomains of the transistor to be:
Rho = {-Electron_Concentration * Elementary_Charge}.
Electron_Concentration is the Dependent Variable coming from Transport of Diluted Species. Unless I change the above equation to:
Rho = {-SomeConstantHere * Elementary_Charge}
Then I got this error: "Failed to converge, even when using minimum damping factor."
Using the constant works, but I would like to have a working version with the correct Dependent Variable of electron concentration.
How can I get it done? Should I try Linear Extrusion? Thanks! :)
1 Reply Last Post Mar 1, 2011, 9:37 p.m. EST
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Posted:
1 decade ago
I had the same problem, but I use the space charge density of an electrolyte so my function looks a bit different.
Did you make sure that the electron concentration has the same variable name in both physics?
Nils
Did you make sure that the electron concentration has the same variable name in both physics?
Nils