Proposal for a new turbulent premixed combustion model and its evaluation (development of the model)

The authors propose a new turbulent premixed combustion model based on a hyperbolic tangent approximation of the reaction progress variable distribution in a one-dimensional laminar flame. Several different conventional models including FL (flamelet), EBU (eddy break up), ED (eddy dissipation) and FS (flame sheet) models are compared with the proposed model. Main features of the proposed model are as follows: (1) The model is constructed from a laminar flamelet part and a distributed flame part. (2) The model is applicable to laminar and turbulent flame analyses, and it does not depend upon the types of turbulent models. (3) Its distributed flame part includes EBU, ED and FS models as approximations.