Abstract
The use of premixed prevaporized combustor designs, as a means of achieving low NO x emissions for gas turbines, is limited by the problems of flame stability. Grid plate flame stabilizers offer a technique for burning weak mixtures efficiently with low NO x . Weak stability data is presented for a wide range of grid plate geometries at simulated gas turbine conditions. The influence of stabilizer geometry, pressure loss, mean velocity, and inlet temperature is investigated for premixed propane-air flames. Weak extinction is postulated to occur when the mean flow velocity exceeds the turbulent burning velocity. The weak extinction data are shown to correlate with the same parameters as conventional turbulent burning velocity data.
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