Comsol Multiphysics Heat Transfer

  • #1
mherna48
43
0
I have a problem where the coefficient of thermal conductivity changes as temperature changes. Where/how do I input this into comsol?
 
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  • #2
just make a global expression for thermal conductivity as a function of temperature. it will work the rest out.
 
  • #3
I don't know the equation for thermal conductivity as a function of temperature to do that. I was trying to find that equation, given over 2000 data points that plot conductivity versus Temperature.

I have since created a temperature profile(Thermal goggle view) by interpolating those data points. Now I'm trying to find the equation to the Temperature profile. Do you know how to go about doing this?
 
  • #4
I would just suggest using MATLAB, input ur data points as a matrix and plot it, then use curve fitting.
 
  • #5
Hey, Thanks again. I figured out how to do it. I went into post processing and plotted a line plot of the temperature along the z-axis. I then exported the data to a .txt file and opened it in Excel. Then I did the line fitting there.

Thanks again.
 
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