Pdesolve help

[ptc-5198484]

Hello-

I am trying to use pdesolve to solve the unsteady heat conduction equation for a 1D plate that has heat generation and a convective boundary condition. I have the following sheet, but it keeps saying "variable is undefined". I have never used pdesolve before, but I think I am doing it right. Any suggestions would be appreciated.

Thanks

-Jon

[MihaiMoraru · Accepted solution]

Yes, you are doing right. One of the BCs creates the problem. I think you missed (probably a copy/paste error) to specify what is the difference in temperature at the end of the plate.

You used: Tair - T(z,t), but it should be Tair - T(zhalf,t). The solution obtained looks like in the picture. Please find the sheet attached.

Is this the solution you are looking for?

[ptc-5198484]

awesome! Thank you!