Comparison of LES, RANS and experiments in an aeronautical gas turbine combustion chamber

Abstract Although Large Eddy Simulations (LES) have demonstrated their potential in simple academic combustion chambers, their application to real gas turbine chambers requires specific developments and validations. In this study, three specific aspects of such chambers are discussed: multiple inlets, multi-perforated plates and film cooling. LES are used in an industry-like chamber and results are compared with predictions provided by Reynolds Averaged Navier–Stokes (RANS) simulations and experimental measurements. Multi-perforation is handled using a simplified effusive wall law while film cooling makes use of low resolution influx conditions (‘coarse LES’). Experimental results are well reproduced and qualitatively improved when compared to RANS predictions. LES results underline the potential of the approach for industrial use.

[1]  S. Menon,et al.  Subgrid Modeling of Turbulent Premixed Flames in the Flamelet Regime , 2000, Proceeding of First Symposium on Turbulence and Shear Flow Phenomena.

[2]  P. Sagaut.  Large Eddy Simulation for Incompressible Flows , 2001 .

[3]  H. Pitsch,et al.  Large-eddy simulation of premixed turbulent combustion using a level-set approach , 2002 .

[4]  Olivier Colin,et al.  Development of High-Order Taylor-Galerkin Schemes for LES , 2000 .

[5]  T. Poinsot,et al.  Theoretical and numerical combustion , 2001 .

[6]  J. Janicka,et al.  Large-Eddy Simulation of a Turbulent Hydrogen Diffusion Flame , 1999, Proceeding of First Symposium on Turbulence and Shear Flow Phenomena.

[7]  F. Nicoud,et al.  Joint use of compressible large-eddy simulation and Helmholtz solvers for the analysis of rotating modes in an industrial swirled burner , 2006 .

[8]  M. Germano,et al.  Turbulence: the filtering approach , 1992, Journal of Fluid Mechanics.

[9]  Ericka Stricklin-Parker,et al.  Ann , 2005 .

[10]  T. Poinsot,et al.  Studies of mean and unsteady flow in a swirled combustor using experiments, acoustic analysis, and large eddy simulations , 2005 .

[11]  F. Ducros,et al.  A thickened flame model for large eddy simulations of turbulent premixed combustion , 2000 .

[12]  R. Koch,et al.  Compressible large eddy simulation of turbulent combustion in complex geometry on unstructured meshes , 2004 .

[13]  T. Poinsot.  Boundary conditions for direct simulations of compressible viscous flows , 1992 .

[14]  J. Smagorinsky,et al.  GENERAL CIRCULATION EXPERIMENTS WITH THE PRIMITIVE EQUATIONS , 1963 .

[15]  Thierry Poinsot,et al.  Numerical methods for unsteady compressible multi-component reacting flows on fixed and moving grids , 2005 .

[16]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[17]  Thierry Poinsot,et al.  Experimental and numerical studies of dilution systems for low-emission combustors , 2005 .

[18]  P Sagaut,et al.  Large Eddy Simulation for Incompressible Flows: An Introduction. Scientific Computation Series , 2002 .

[19]  H. Pitsch,et al.  Large-eddy simulation of a turbulent piloted methane/air diffusion flame (Sandia flame D) , 2000 .