高温下でのメタン : 空気層流燃焼速度の数値計算

概要

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Laminar burning velocity of methane-air lean mixture at high temperature was computed using CHEMKlN code with options of the windward difference for convection terms, mesh points of about 45,the mixture average model for transport coefficients and no thermal diffusion. The computed burning velocities were compared with the data experimentally obtained at the range of temperature from 303 K to 1023 K, pressure from 0.1 MPa to 0.3 MPa and equivalence ratio from 0.5 to 1.0. The difference between them was less than 9 % on the average, which implies that the reaction mechanism, the reaction rate constants and the transport coefficients adopted in CHEMKIN are reasonable for estimating the burning velocity of methane-air lean mixture at high temperature. The combustion intensity and NO emission level of multi-type bunsen burner estimated from the burning velocity under the ceramics gas turbine operating condition, was found satisfying the performance required for the ceramics gas turbine combustor.
社団法人日本ガスタービン学会の論文
1997-06-10