Flame Height and Temperature Calculator

This calculator can be used to determine the flame height and plume centreline temperatures based on correlations by Heskestad and McCaffrey.


Equations
The flame height correlation by Heskestad is given by L = -1.02D + 0.235(Q2/5)

L = Flame Height (m)
D = Fire Diameter (m)
Q = Heat Release Rate (kW)


The plume centreline temperature correlation by Heskestad is given by T0 = 25(Qc2/5/(z - z0))5/3 + T

The plume centreline temperature correlation by McCaffrey is given by T0 = 22.3(Q2/5/z)5/3 + T

T0 = Centreline Temperature (oC)
Qc = Heat Release Rate * Radiative Factor
z = Flame Height (m)
z0 = Virtual Flame Height (m)
T = Ambient Temperature (oC)


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