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Gas-phase boundary layer ignition on a catalytic flat plate with heat loss

โœ Scribed by C. Trevino; N. Peters

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
541 KB
Volume
61
Category
Article
ISSN
0010-2180

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โœฆ Synopsis

The gas-phase ignition of a premixed boundary layer flow by a nonisothermal plate with very large catalytic efficiency is studied. The catalytic upper side of the plate is in contact with the premixed gas while the lower side is held at constant temperature. The catalytic reaction is assumed to be ignited and diffusion controlled. The temperature on this side changes from the adiabatic equilibrium temperature at the leading edge to reach asymptotically the constant temperature of the lower surface far downstream. Matched asymptotic expansions are used to analyze the gas-phase ignition for different limiting cases. When the constant temperature of the lower surface is less than the adiabatic equilibrium temperature an S-shaped response curve is obtained showing different ignition branches.

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