Models of finite rate combustion chemistry based on tabulation have been found to be efficient and accurate for a broad range of fuel and flame configurations. However, the modelling of formation of oxides of nitrogen remains a challenging issue. Even recent developments that take into account heat losses do not provide accurate prediction of NOx species despite a very good match for major species and temperature. The present paper introduces a model based on a chemical lookup-table for the NO formation rate in the preheat, initiation and fuel consumption region of a premix flame combined with algebraic relations in the post-flame area, thus reducing advantageously the tabulated information. This model is applied to a premixed laminar burner and compared to previous models based on tabulated chemistry.

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