Now that we have obtained the temperature distribution in the rod Equation
(3.16) and plotted it for one
set of parameters, the heat flux distribution will be determined using Fourier's
law. The heat flux (W/m2) is
(3.17) |
|
|
The outward directed component of the vector
at z = 0 and z = L are respectively |
(3.18) |
|
|
(3.19) |
|
|
where
is the outward drawn normal to the surface. The net outflow
from the rod is then |
(3.20) |
|
|
where |
Q
= net outflow of heat from the rod, |
units: Watts |
|
Ac
= cross sectional area of rod, |
units: m2 |