Effects of gas and soot radiation on soot formation in a coflow laminar ethylene diffusion flame
نویسندگان
چکیده
منابع مشابه
Computational and Experimental Study of Soot Formation in a Coflow, Laminar Ethylene Diffusion Flame
A sooting, ethylene coflow diffusion flame has been studied both experimentally and computationally. The fuel is diluted with nitrogen and the flame is slightly lifted to minimize the effects of the burner. Both probe (thermocouple and gas-sampling techniques) and optical diagnostic methods (Rayleigh scattering and laser-induced incandescence) are used to measure the temperature, gas species, a...
متن کاملA Numerical Study of the Influence of Transport Properties of Inert Diluents on Soot Formation in a Coflow Laminar Ethylene/air Diffusion Flame
The influence of transport properties of inert additives on soot formation in a coflow axisymmetric ethylene/air diffusion flame has been numerically investigated. Detailed reaction mechanism and complex thermal and transport properties were used. The fully coupled elliptic equations were solved. The radiative heat transfer from CO, CO2, H2O, and soot was calculated using the discrete-ordinates...
متن کاملSoot Formation in Laminar Diffusion Flames
Laminar, sooting, coflow diffusion flames at atmospheric pressure have been studied experimentally and theoretically as a function of fuel dilution by inert nitrogen. The flames have been investigated with laser diagnostics. Laser extinction has been used to calibrate the experimental soot volume fractions and an improved gating method has been implemented in the laser-induced incandescence (LI...
متن کاملDetermination of the soot absorption function and thermal accommodation coefficient using low-fluence LII in a laminar coflow ethylene diffusion flame
Effective temperatures of pulsed-laser-heated soot particles were derived from their thermal emission intensities using optical pyrometry in a laminar ethylene coflow diffusion flame. The present study concerns conditions of relatively low laser fluences under which soot particles are heated to temperatures below 3500 K to avoid complications of soot particle vaporization in both the experiment...
متن کاملSoot Formation in Laminar Partially Premixed Coflow Flames by Thermophoretic Particle Densitometry
The formation of soot particles in combustion depends on several factors that include: pressure, temperature, fuel chemical structure and extent of premixing. An improved version of the thermophoretic particle densitometry (TPD) method, has been used in this study for quantitative and qualitative characterization of soot particles generated in laminar partially-premixed co-flow flames having di...
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ژورنال
عنوان ژورنال: Journal of Quantitative Spectroscopy and Radiative Transfer
سال: 2002
ISSN: 0022-4073
DOI: 10.1016/s0022-4073(01)00205-9