Hi everyone
I'm a student in chemical engineering in the School of Engineering of
Mons, Belgium.
I'm studying the modelisation of jet fire and more precisely the
"Thornton-Shell" model based on the Chamberlain model ( Developments in
design methods for predicting thermal radiation from flares/1987)
I'm trying to understand a correlation which seems to be cloudy:
The way use to calculate the mass fraction of inflammable gas in
stoechiometric ratio with air is :
w = Mr/(15.816*Mr + 39.5) with w: mass fraction of the gas
Mr : molar weight
of the gas(g/mol)
I tried to find this correlation by myself using the equation of
combution and the definition of the mass fraction and I got for
hydocarbon CxHy:
w = Mr/(Mr+x*(MrO2 + 3.76 MrN2))
which is not the same as used by Chamberlain.
Is someone able to help me finding it out? ...
Thanks
Lionel
