چكيده لاتين :
Soot concentration distribuiion is investigated both numerically and erperimentally
in methane-air diffu8ion flame. The experimental work is conducted with a
cylindrical swirl stabilized combustor. Filter paper technique is יused to measure
soot volume fraction inside the combustor. The numerical simulaiioti is based
on the solution of the fully- coupled conseruaium equations for swirling iurouletii
flow, chemical species kinetic modeling, fuel combustion and soot formation
and oxidation. The soot particle number density and the mass density based
on the acetylene concentrations are used to model the soot emission in confined
swirling turbulent dijiיusion flame. The comparison between predictions and
measurement results over a range of different swirl numbers shows good
agreement. The results reveal the significant influence of swirl intensity on
combustion characteristics and soot formation in diffusion flames, An increase
in swirl number enhances the mixinq rate, peak temperature, and soot volume
fraction inside the flame zone. The locations to give the maximum temperature
and soot concentration shift to backward (close to combustor inlet) with increase
in swirl number.
