Testing Chemical Mechanisms by Comparison of Predicted and Measured Flame Temperatures in Burner-Stabilized, 1-D Hydrogen Flames

摘要

A method is presented for extending the range of conditions for which the performance of chemical mechanisms used to predict burning velocities can be tested. Specifically, by comparing the computed variation of flame temperature with mass flux in burner-stabilized flat flames with those obtained experimentally the predictive power of a chemical mechanism can be tested at constant equivalence ratio over a range of more than 700 K. Sensitivity analyses for the flame temperature shows changing importance of various reactions with mass flux. High-quality flame temperature data obtained by CARS is capable of discerning differences in rate coefficients smaller than their current uncertainty.