How to define the current density integral constraint on the surface of a conductor?

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Hi everyone,

I want to simulate a superconducting coil, but I only know how to set E-J character.

I don't konw how to add a current in the superconduct. The literature use I=integrate(J) to

constraint the edge of the superconduct.

So how to define the current density integral constraint on the surface of a conductor?

Any suggestion you make will help me. Thanks for reading this.


1 Reply Last Post 9 May 2020, 09:05 GMT-4

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Posted: 5 months ago 9 May 2020, 09:05 GMT-4

Hello, I have basically the same question: I would like to calculate the current distribution in a superconducting wire in the Meissner state, fed with a current significantly less than the critical current, i.e. the voltage at the wire terminals is zero (because the conductivity is infinite). Defining a "Current" Terminal (in the module "electrical currents") with rho_0 resistivity equal to zero does not seem to be accepted by COMSOL... Sorry for not being able to help you.

Hello, I have basically the same question: I would like to calculate the current distribution in a superconducting wire in the Meissner state, fed with a current significantly less than the critical current, i.e. the voltage at the wire terminals is zero (because the conductivity is infinite). Defining a "Current" Terminal (in the module "electrical currents") with rho_0 resistivity equal to zero does not seem to be accepted by COMSOL... Sorry for not being able to help you.

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