soot yield of ethanol

AMA

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Dec 2, 2016, 4:50:34 AM12/2/16

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hello

i am running a simulation of fire in atrium and i used the reactant is ethanol. based on past researches i used the soot yield by ethanol (0.08) and the CO yield 0.022 but the results in SV show a bulk amount of black smoke which makes me skeptical about the value of the soot.

i would really appreciate of you can give me the reference that i can use to specify the soot yield value of ethanol.

thank you

Dave McGill

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Dec 2, 2016, 6:27:48 AM12/2/16

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Hi,

The SFPE Handbook, 3rd Ed,table 3-4.14 indicates

CO yield = 0.001

soot yield = 0.008

Heat of combustion = 25.6

Radiative heat of combustion = 6.5

You will have to change the radiative fraction from the default value of 0.35.

Dave

dr_jfloyd

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Dec 2, 2016, 7:18:39 AM12/2/16

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If you are using the latest FDS and use FUEL='ETHANOL', the FDS will automatically adjust the radiative fraction per the table of species in the User's Guide

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