Heat transfer

From CFD-Wiki

                     == Conduction ==

• Conduction can be defined as the heat transfer through a substance because of a temperature gradient. The rate of heat transfer by conduction between two regions of a substance is proportional to the temperature difference between them. The constant of propotionality is called thermal conductivity of the material.

• Mathematically, it can be described by using the Fourier's law:

Where

     Q = Heat conducted (W)

     k = Thermal conductivity of the material (W/m-K)

     A = Cross-sectional area of the object parallel to heat conduction (m2)

     T = Temparature (K)

     X = Length of the object (m)

Convection

Radiation