Amount of heat energy transfer across unit area in unit time:
| (1) | j_H = \frac{\delta E_H}{\delta A \cdot \delta t} |
For the continuum body the heat flux model is adequately described by Fourier's law:
| (2) | {\bf j}_H = \lambda \cdot {\bf \nabla} T |
where
\lambda | thermal conductivity of the continuum body |
The heat flux j_H is related to heat flow q_H as:
| (3) | j_H = \frac{q_H}{A} |
where
A | heat transfer area |
See also
Physics / Thermodynamics / Heat Transfer / Heat flow
[ Heat Flux Conduction @ model (Fourier's law) ]