Senin, 05 September 2011

The Conduction Rate Equation

The Conduction Rate Equation


Recall from Chapter 1:
- Heat rate in the x-direction
- Heat flux in the x-direction
In reality we must account for heat transfer in three dimensions
Temperature is a scalar field T(x,y,z)

Heat flux is a vector quantity. In Cartesian coordinates:
 

 
for isotropic medium :


Where three dimensional del operator in cartesian coordinates:



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