PSFC/JA-05-21 In-Cylinder Laminar Flame Propagation Speed: Effect of Hydrogen And Hydrogen Rich Gas Addition
نویسنده
چکیده
In this paper, the implication of various grades of hydrogen rich gas on the in-cylinder flame speed, and on the knock propensity, are discussed. The laminar flame propagation speed of methane with various grades of hydrogen-rich gas addition has been calculated. The effect of adding hydrogen, hydrogen rich gas from an ideal reformer (synthesis gas), as well as that from a non-catalytic plasmatron fuel reformer has been determined. The model has been used for stoichiometric as well as lean combustion. The effect of including the enthalpy of the reformate on the both the flame speed and on the propensity to knock has also been considered. A simple formula for the calculation of the flame speed for the case of mixtures of reformate and conventional fuels is proposed and has been tested against experiments at atmospheric pressure with hydrogen enriched flames.
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