Numerical simulation of one-dimensional laminar flames propagating into reacting premixed gases

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Combustion and Flame; (USA)

DOI:https://doi.org/10.1016/0010-2180(90)90114-7· OSTI ID:6806559

Kaufmann, D; Roth, P ^[1]

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1. Fachgebiet Verbrennung und Gasdynamik, Universitat Duisburg, 41 Duisburg (DE)

In this paper, the propagation of a one-dimensional flame front into a reacting combustible mixture is numerically studied. A simplified mathematical method, splitting the problem into a prereaction part and a flame propagation part, was applied to the completely nonstationary problem. Initially stoichimetric mixtures of H{sub 2}/O{sub 2} and C{sub 2}H{sub 6}/O{sub 2} were investigated for isothermal and adiabatic boundary conditions of the prereactions. In the isothermal case, the laminar burning velocity of the mixture decreased gradually with time. In conclusion, the reasons for this decrease are an increasing amount of combustion products combined with the heat loss necessary to maintain isothermal conditions. Compared with these phenomena, the accelerating effect of radical concentrations in the preflame region is of minor importance.

• OSTI ID: 6806559
• Journal Information: Combustion and Flame; (USA), Journal Name: Combustion and Flame; (USA) Vol. 80:3; ISSN 0010-2180; ISSN CBFMA
• Country of Publication: United States
• Language: English

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99 GENERAL AND MISCELLANEOUS
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BOUNDARY CONDITIONS
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FLAMES
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ORGANIC COMPOUNDS
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