rate of energy transfer per unit area.
is proportional to the temperature gradient (the difference in temperature
between the two bodies or physical locations). See
Incropera and DeWitt (2002) for further discussion.
Preferred units for heat flux are kW/m2. Although heat flux and reaction
intensity (an intermediate variable in Rothermel's fire spread model)
share common units of measure, the two quantities are not the same.
Incropera, F.P.; DeWitt, D.P. 2002. Fundamentals
of heat and mass transfer. New York: Wiley and Sons.
Bret Butler, Mechanical Engineer
Rocky Mountain Research Station