SS-V: 3080 Heat Conduction with Temperature-dependent Conductivity
Test No. VT09Calculate the average heat flux through a slab of thickness t (0.25 feet) within the temperature range (100°F and 300°F).
Definition

The material properties are:
Thermal conductivity of the material varies linearly with respect to temperature (k(T)=C0+C1T)
Where,
        - C0=0.031 BTU/hr-ft-℉
 - C1=0.000031 BTU/hr-ft-℉
 
- Temperature ℉
 - Thermal Conductivity (BTU/(hr*ft*℉)
 - 100
 - 0.0341
 - 300
 - 0.0403
 
Results
Calculated the average thermal flux for the slab 1 x 1 x
                0.25 feet solid for which the thermal conductivity of an 85% magnesia insulating
                material is described by the equation k(T)=C0+C1T, valid for
                temperatures between 100℉ and 300℉.
| Theory | SimSolid | % Difference | |
|---|---|---|---|
| Thermal flux, [BTU/(hr*ft2) | 29.76 | 30.02 | <1 | 
*Reference solution is a 1D model
1  Kreith, F.
                Principles of Heat Transfer. 2nd ed. P.A.: International Textbook Co., 1959,
                pg.25