Abstract
Large-eddy simulations (LES) of high Reynolds number spray with and without combustion in a full-scale gas turbine combustor are carried out to investigate the interaction between the liquid and gas phases under realistic conditions. Effect of changing the inlet swirl on droplet dispersion and transport is first studied followed by an investigation of effect of heat release for the same initial swirl conditions. Results show that for the non-reacting spray, increase in swirl dramatically increases both spray dispersion and breakdown of the initially coherent azimuthal vortices shed from the dump plane. Vortex breakdown and formation of the centerline recirculation bubble is shown to be primarily a function of initial swirl for this device. With heat release, the shape and extent of the recirculation bubble (when it exists) changes significantly from the equivalent non-reacting case due to changes in the velocity field caused by thermal expansion in the near field of the dump plane.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Chakravarthy, V. and Menon, S. (2001). Large-eddy simulations of turbulent premixed flames in the flamelet regime. Combustion Science and Technology, 162: 175–222.
Faeth, G. M. (1987). Mixing, transport and combustion in sprays. Progress in Energy and Combustion Science, 13: 293–345.
Kim, W.-W. and Menon, S. (1999). A new incompressible solver for large-eddy simulations. International Journal of Numerical Fluid Mechanics, 31: 983–1017.
Kim, W.-W. and Menon, S. (2000). Numerical modeling of turbulent premixed flames in the thin-reaction-zones regime. Combustion Science and Technology, 160: 119–150.
Kim, W.-W., Menon, S., and Mongia, H. C. (1999). Large eddy simulations of a gas turbine combustor flow. Combustion Science and Technology, 143: 25–62.
Menon, S. and Calhoon, W. (1996). Subgrid mixing and molecular transport modeling for large-eddy simulations of turbulent reacting flows. Proceedings of the Combustion Institute, 26: 59–66.
Menon, S. and Pannala, S. (1997). Subgrid modeling of unsteady two-phase turbulent flows. AIAA Paper No. 97–3113.
Menon, S., Yeung, P.-K., and Kim, W.-W. (1996). Effect of subgrid models on the computed interscale energy transfer in isotropic turbulence. Computers and Fluids, 25 (2): 165–180.
Pannala, S. and Menon, S. (1998). Large eddy simulations of two-phase turbulent flows. AIAA 98–0163, 36th AIAA Aerospace Sciences Meeting.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Menon, S., Sankaran, V. (2002). Large-Eddy Simulation of Turbulent Sprays. In: Pollard, A., Candel, S. (eds) IUTAM Symposium on Turbulent Mixing and Combustion. Fluid Mechanics and Its Applications, vol 70. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1998-8_36
Download citation
DOI: https://doi.org/10.1007/978-94-017-1998-8_36
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-6074-7
Online ISBN: 978-94-017-1998-8
eBook Packages: Springer Book Archive