Heat transfer: 2D conduction in square block

This MATLAB code that models a 2D transient conduction in a square plate with the four sides(right,left, top, bottom) at a constant temperature. Heat generation can be added by setting non-zero positive value for g. Now I need to change the code so the the bottom and left sides are not a constant temperature but a heat flux (=83333 W/m^2). How can I change this???

The code is attached.

Answer 1

[range rover]

Buddy, i think there are better approaches than this and these things can be easily dealed in that