I have a multi-filamentary superconducting tape; i.e, superconducting filaments embedded in a silver matrix. I apply an external current which I increase in a parametric sweep. I've tried to make the superconductor conductivity dependent on the mean current density inside the filaments but I don't know how. I create the function for the conductivity dependence of the superconducting filaments but I don't know how to link this dependence with the mean current density inside the filaments.
Thanks in advance.
Andy Scott.
Hi Andy,
First try a 2D problem to save some computing time and have a look here:
http://www.htsmodelling.com/?page_id=748
In fact, you need a constituve law for the HTS material, usually E(J)=rho(J)*J=Ec*(J/Jc)^n
Best regards,
Kévin
I don't know about a COMSOL modelling of the system you are studying but I woukd try to model it using a random resistor- superconductor network. See for example:
L. B. Kiss and P. Svedlindh, Phys. Rev. Lett. 71, 2817 (1993)
If you have some computational skills, this kind of models are relatively easy to implement.
Saludos,
Jose
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