Abstract
The effect of variations in fluid properties on the analysis of a stagnation point diffusion flame has been studied by means of a numerical calculation. The thermochemistry of the flame was prescribed by an empirical correlation of species concentrations and temperature with a conserved scalar (the fuel atom mass fraction). In this way the mixing process in the diffusion flame was decoupled from the chemical kinetics. Variations in the Schmidt number for the mixture fraction did not have a significant effect on the numerical prediction of the atom mass fraction profile in the flame. However, the assumption of a constant value for ρμ through the methane-air flame caused a significant overprediction of the mixing-layer thickness. An average value of ρμ through the boundary layer yielded satisfactory predictions of the mass fraction profile.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2159-2168 |
| Number of pages | 10 |
| Journal | International Journal of Heat and Mass Transfer |
| Volume | 28 |
| Issue number | 11 |
| DOIs | |
| State | Published - 1985 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
- Energy(all)
- Mechanical Engineering
Cite this
Variable property effects in the analysis of a stagnation point diffusion flame. / Kennedy, I. M.
In: International Journal of Heat and Mass Transfer, Vol. 28, No. 11, 1985, p. 2159-2168.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Variable property effects in the analysis of a stagnation point diffusion flame
AU - Kennedy, I. M.
PY - 1985
Y1 - 1985
N2 - The effect of variations in fluid properties on the analysis of a stagnation point diffusion flame has been studied by means of a numerical calculation. The thermochemistry of the flame was prescribed by an empirical correlation of species concentrations and temperature with a conserved scalar (the fuel atom mass fraction). In this way the mixing process in the diffusion flame was decoupled from the chemical kinetics. Variations in the Schmidt number for the mixture fraction did not have a significant effect on the numerical prediction of the atom mass fraction profile in the flame. However, the assumption of a constant value for ρμ through the methane-air flame caused a significant overprediction of the mixing-layer thickness. An average value of ρμ through the boundary layer yielded satisfactory predictions of the mass fraction profile.
AB - The effect of variations in fluid properties on the analysis of a stagnation point diffusion flame has been studied by means of a numerical calculation. The thermochemistry of the flame was prescribed by an empirical correlation of species concentrations and temperature with a conserved scalar (the fuel atom mass fraction). In this way the mixing process in the diffusion flame was decoupled from the chemical kinetics. Variations in the Schmidt number for the mixture fraction did not have a significant effect on the numerical prediction of the atom mass fraction profile in the flame. However, the assumption of a constant value for ρμ through the methane-air flame caused a significant overprediction of the mixing-layer thickness. An average value of ρμ through the boundary layer yielded satisfactory predictions of the mass fraction profile.
UR - http://www.scopus.com/inward/record.url?scp=0022162168&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022162168&partnerID=8YFLogxK
U2 - 10.1016/0017-9310(85)90110-3
DO - 10.1016/0017-9310(85)90110-3
M3 - Article
AN - SCOPUS:0022162168
VL - 28
SP - 2159
EP - 2168
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
IS - 11
ER -