On the Nature of Superadiabatic Temperatures in Premixed Rich Hydrocarbon Flames
Source abstract
Abstract
The propagation of flat laminar flames is studied numerically. It is shown that in rich homogeneous propane–air and methane–air mixtures, the maximum flame temperature exceeds the flame temperature in thermodynamic equilibrium. The degree of superadiabaticity depends on the concentration of the fuel mixed with air. It is shown that the superadiabaticity of rich flames is due to the diffusion of hydrogen from the reaction zone to the preheating zone and its preferential (compared to hydrocarbon) oxidation. The total enthalpy of the gas varies along the coordinate at the flame front and has a maximum.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Combustion and flame dynamics · Rocket and propulsion systems research · Material Science and Thermodynamics
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References (8)
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