Dear Matlab community,
I am using the PDE toolbox to solve a transient thermal model. Among thermal properties, thermal conductivity changes over time. I used the function handle:
k = @(~,state) kin-(kin-kfin)/(duration/state.time);
But when I run the code, it prompts that: "Coefficient evaluation function, "@(~,state) kin-(kin-kfin)/(duration/state.time)", was requested to
calculate coefficients at 2500 locations so should have returned a matrix with 2500 columns. Instead it returned a matrix with 1
How can I solve this issue?