Highly Parallel Large Eddy Simulations of Multiburner Configurations in Industrial Gas Turbines
نویسندگان
چکیده
Recent advances in computer science and highly parallel algorithms make Large Eddy Simulation (LES) an efficient tool for the study of complex flows. The available resources allow today to tackle full complex geometries that can not be installed in laboratory facilities. The present paper demonstrates that the state of the art in LES and computer science allows simulations of combustion chambers with one, three or all burners and that results may differ considerably from one configuration to the other. Computational needs and issues for such simulations are discussed. A single burner periodic sector and a triple burner sector of an annular combustion chamber of a gas turbine are investigated to assess the impact of the periodicity simplification. Cold flow results validate this approach while reacting simulations underline differences in the results. The acoustic response of the set-up is totally different in both cases so that full geometry simulations seem a requirement for combustion instability studies.
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