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Spray Modeling and Predictive Simulations in Realistic Gas-Turbine Engines

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Handbook of Atomization and Sprays

Abstract

Large-eddy simulation (LES) is a promising technique for accurate prediction of reacting multiphase flows in practical gas-turbine engines. These combustors involve complex physical phenomena of primary atomization of liquid sheet/jet and secondary breakup, droplet evaporation, turbulent mixing of fuel vapor with oxidizer, and combustion dynamics. This chapter summarizes advances made in modeling spray fields with LES of turbulent reacting flows in realistic combustor configurations. Specifically, details of subgrid models for droplet dynamics including breakup, evaporation, deformation, droplet dispersion, and finite-size droplets are presented in the context of an Eulerian–Lagrangian simulation methodology on unstructured grids. Effectiveness of LES with advanced spray models in predicting spray behavior in a patternation study of realistic Pratt and Whitney injector is described.

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Acknowledgments

Support for this work was provided by the US Department of Energy under the Advanced Scientific Computing (ASC) program. The computer resources at San Diego Supercomputing Center are greatly appreciated. We are indebted to Profs. Parviz Moin, Krishnan Mahesh, Gianluca Iaccarino, Brian Helenbrook, Heinz Pitsch, Drs. Frank Ham and Joeseph Oefelein, and the combustor group at Pratt & Whitney for their help and support at various stages of this work. We also thank Mr. Daniel Peterson for editing this document.

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Authors and Affiliations

  1. School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University, Corvallis, OR, 97331, USA

    S. V. Apte

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  1. S. V. Apte
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Correspondence to S. V. Apte .

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  1. Dept. Mechanical &, Industrial Engineering, University of Toronto, King's College Road 5, Toronto, M5S 3G8, Ontario, Canada

    Nasser Ashgriz

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Apte, S.V., Moin, P. (2011). Spray Modeling and Predictive Simulations in Realistic Gas-Turbine Engines. In: Ashgriz, N. (eds) Handbook of Atomization and Sprays. Springer, Boston, MA. https://doi.org/10.1007/978-1-4419-7264-4_35

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  • DOI: https://doi.org/10.1007/978-1-4419-7264-4_35

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