Abstract
The Flamelet/Progress-Variable (FPV) model is able to describe diffusion flames in the flamelet regime by parametrising the chemical problem as a function of a limited number of variables, namely the mixture fraction Z and the progress-variable c. The aim of the present paper is to study the effect of different mixture fraction variance \(Z_v\) and subgrid scalar dissipation rate \(\chi _{sgs}\) models in the prediction of turbulent combustion phenomena, particularly for diffusion flames. Both parameters model scalar mixing at the subgrid level, which in turn controls the combustion process. Four different models are compared: an Equilibrium model, a mixture fraction Variance Transport Equation (VTE) model, a Transport Equation for the Second moment of the mixture fraction (STE), and a Scalar Dissipation Rate transport equation (SDR-TE).
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Acknowledgments
The author thankfully acknowledges the computer resources, technical expertise and assistance provided by the Barcelona Supercomputing Center—Centro Nacional de Supercomputación.
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Ventosa-Molina, J., Lehmkuhl, O., Pérez-Segarra, C.D., Oliva, A. (2016). Assessment of Subfilter Scalar Dissipation Rate and Mixture Fraction Variance Models. In: Peinke, J., Kampers, G., Oberlack, M., Wacławczyk, M., Talamelli, A. (eds) Progress in Turbulence VI. Springer Proceedings in Physics, vol 165. Springer, Cham. https://doi.org/10.1007/978-3-319-29130-7_12
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DOI: https://doi.org/10.1007/978-3-319-29130-7_12
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