Description: This paper describes a simplified numerical model used for predicting an optimized air staged plug-flow combustor for low calorific value gas mixtures. The parameter used for optimization, Z, is the summed flow rates of fuel components leaving the combustor. An optimized combustor is one of a given length and input mass flux that minimizes Z. Since a mathematical proof describing the importance of global interactions remains lacking, the model employs both a ``local optimization`` procedure and a ``global optimization`` procedure. By exercising and comparing both procedures, the model shows that ``local optimization`` is sufficient to provide an optimized solution. Sensitivity of Z to deviations in air injection profile and inlet temperature is also examined.
Date: December 31, 1996
Creator: Gemmen, R.S.
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