Consider the two dimensional grid (Ax = Ay) representing %3D steady state conditions with no internal volumetric generation for a system with thermal conductivity k One of 12. 11. 10. 9. 89 Ay 6. 7 13. 4. 5. the boundaries is maintained at a constant temperature T, Insulation while the others are adiabatic. Derive an expression for the 14. 3. Isothermal heat rate per unit length normal to the page crossing the isothermal boundary (T,). 15. 2. boundary T, 16. 1 Insulation