I don't know if I'm publishing this at the right forum or not. I want to make some basic simulations regarding current leads.
The current lead is made of a cylinderical copper wire with 10 cm diameter and 50 cm length.
From side I have a current supplier which gives me 200 A. It's at a temprature of 300 kelvin
From the other side I have a refrigerator cool head that brings me to 70 kelvin with 40 watts.
I want to build a simulation and see how much loss do I get due to the resistivity and heat transfer.
I don't know how to build the setup. Would be glad to get some help.