Calculate flame height using the Heskestad correlation for pool fires and general combustion.
Input Parameters
Results
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Mean Flame Height
m
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Flame Height / Diameter
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Dimensionless Q*
Note: The Heskestad correlation is valid for a wide range of fire sizes. Mean flame height corresponds to 50% intermittency. The tip of the luminous flame is approximately 2x the mean height.
Reference
Heskestad Correlation (SFPE Handbook Ch. 13):
L_f = 0.235 * Q^(2/5) - 1.02 * D
Q* = Q / (rho_a * c_p * T_a * sqrt(g) * D^(5/2))
Where L_f = mean flame height (m), Q = HRR (kW), D = fire diameter (m)