Floating point exception when simulating plasma

Mants · February 10, 2019, 10:52

Hello,

I have been trying to set up an axisymmetric plasma simulation, and have been using the User Guide to set up the physics correctly. However, upon running, I keep getting this error message:

A floating point exception has occurred: floating point exception [Invalid operation]. The specific cause cannot be identified. Please refer to the troubleshooting section of the User's Guide.
Context: star.plasma.coupledelectron.CoupledPlasmaElectronM odel

Does anyone know what could cause this?

Thank you in advance.

fluid23 · February 25, 2019, 12:32

Looks like your model is diverging. I am not familiar with plasma simulations. What physics options do you have enabled? First thing I would do is start with a very basic simulation and build in complexity. That way, when this pops up you will have some idea of what you added to the model that would cause this.

What do your residuals look like?

February 10, 2019, 10:52	Floating point exception when simulating plasma	#1
Mants New Member Mantas Join Date: Feb 2019 Posts: 1 Rep Power: 0	Hello, I have been trying to set up an axisymmetric plasma simulation, and have been using the User Guide to set up the physics correctly. However, upon running, I keep getting this error message: A floating point exception has occurred: floating point exception [Invalid operation]. The specific cause cannot be identified. Please refer to the troubleshooting section of the User's Guide. Context: star.plasma.coupledelectron.CoupledPlasmaElectronM odel Does anyone know what could cause this? Thank you in advance.

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February 25, 2019, 12:32		#2
fluid23 Senior Member Matt Join Date: Aug 2014 Posts: 947 Rep Power: 17	Looks like your model is diverging. I am not familiar with plasma simulations. What physics options do you have enabled? First thing I would do is start with a very basic simulation and build in complexity. That way, when this pops up you will have some idea of what you added to the model that would cause this. What do your residuals look like?