Computational study of a micro-turbine engine combustor using Large Eddy Simulation and Reynolds Averaged turbulence models

Abstract

A computational study of the combustion process inside micro-turbine engines is presented. Different turbulence models are assessed and results are compared against experimental data. Results indicate that RANS models and LES with dynamic Smagorinsky sub-grid model fail to achieve convergence or accurate solutions at the meshes employed in this study. Less accurate results are obtained for the DES when compared with LES-WALE. In terms of the combustion, the outlet flow presents temperature gradients that are likely to affect the turbine performance. References

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