Scattering Coefficient (1/m)
 

Hello, in simulation of natural gas combustion, the scattering coefficient of combustion products (CO2 + H2O + rare particulates) is required. It was assumed zero for my current radiation model. I wonder if some experts in gaseous combustion are there know the range of the scattering coefficient mentioned above. Thanks.

Re: Scattering Coefficient (1/m)
 

Hi, Participating media for burning of natural gas can be treated as absorbing and emitting media, not absorbing emitting scattering media. Combustion product are co2 + h20 +soot. Absorption coefficient of gases depeons (kg)on temperature, gas composition and mean beam length of enclosure i.e. geometry of the system. Soot is tiny carbon particles. Its aborption coefficient(ks) depends on soot volume fraction. Then, total absorption coefficient(kt) is just summation i.e., kg+ks.

if medium contains particles like coal combustion, scattering coefficient is considered and medium is treated as absorbing-emitting scattering medium.

These are theoretical information. If you take the coefficient is zero this means medium contains air (non-absorbing emitting medium). Results are obtained for wall to wall radiation. If you give more information about your system I can supply information to you. For example for large furnaces (10 m long) kg is about 0.012 1/m, for small furnaces (5 m long), 0.35 1/m. Please don't hesistate to ask for further information.

Dr. Nuray Kayakol Sisecam Glass research center

Hi

Maybe is a little too late (11 years lol) but, could you give me the reference (books or papers) of those values for the scattering coeficient??

thank you very much

Hi all,

How to calculate or get the scattering coefficient for a gas mixture?