Frontal fire intensity is directly related to many
aspects of the flame geometry of the fire front (Luke and
McArthur 1978; Nelson 1980). Readers, given frontal
fire intensity, may find it useful to calculate the predicted
flame length, to conjure up a mental image of the fire's
average flame front dimensions. Flame length is defined
as the distance between the tip of the flame and the
ground midway in the zone of active combustion (Fig.
1). An approximate relation between flame length, L
(meters), and frontal fire intensity, I (kilowatts per
meter), is given by either of the following equations
(after Byram 1959, Eq. 3.4):
Frontal fire intensity is directly related to manyaspects of the flame geometry of the fire front (Luke andMcArthur 1978; Nelson 1980). Readers, given frontalfire intensity, may find it useful to calculate the predictedflame length, to conjure up a mental image of the fire'saverage flame front dimensions. Flame length is definedas the distance between the tip of the flame and theground midway in the zone of active combustion (Fig.1). An approximate relation between flame length, L(meters), and frontal fire intensity, I (kilowatts permeter), is given by either of the following equations(after Byram 1959, Eq. 3.4):
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