A relative assessment of sub grid scale models for large eddy simulation of co-axial combustor
Tóm tắt
Large eddy simulation (LES) of a co-axial combustor is reported. Accuracy of LES depends on the ability of the sub-grid scale (SGS) models to predict the turbulent viscosity. The sensitivity of LES results for different SGS models is established for a coaxial annular combustor. The radial, axial and tangential velocity distribution predicted by four sub-grid scale models is compared with the experimental results of Sommerfeld and Qiu. It is observed that the flow physics is captured more accurately by WALE model as compared to other SGS models. The predictions of WALE model are closer to the experimental results for all stations in the flow domain.
Tài liệu tham khảo
Smagorinsky, General circulation experiments with the primitive equations, Monthly Weather Review 91 (1963) 99–164.
F. Nicoud and F. Ducros, Subgrid-scale stress modeling based on the square of the velocity gradient tensor, Flow Turbulence and Combustion, 62 (1999) 183–200.
M. Germano, U. Piomelli, P. Moin and W. H. Cabot, A dynamic subgrid-scale eddy viscosity model, Phys. Fluids A., 3 (1991) 1760–1765.
W.W. Kim and S. Menon, Application of the localized dynamic subgrid-scale model to turbulent wall-boundedflows, Technical Report AIAA-97-0210, 35th Aerospace Sciences Meeting, Reno, NV (1997).
D. Ranga, K. K. J., M. P. Kirkpatrick and K. W. Jenkins, Investigation of the influence of swirl on a confined co annular swirl jet, Computers and Fluids, 39 (2010) 756–767.
L. Hu, L. Zhou and J. Zhang, Large-eddy structures of turbulent swirling flows and methane-air swirling diffusion combustion, Acta Mech. Sinica, 21 (2005) 419–424.
F. di. Mare, W. P. Jones and K. R. Menzies, Large eddy simulation of a model gas turbine combustor, Combustion and Flame, 137 (2004) 278–294.
S. C. Ko and H. J. Sung, Large-eddy simulation of turbulent flow inside a sudden expansion cylindrical chamber, Jr. of Turbulence, 3 (2003) 1–16.
J. Shinjo, Y. Mizobuchi and S. Ogawa, LES of unstable combustion in a gas turbine combustor, 5th International Symposium, ISPHC-2003, Japan (2003) 234–244.
H. Watanabe, R. Kurso and S. Komori, Large eddy simulation of swirling flows in a pulverized coal combustion furnaces with a complex burner, Journal of Environment and Engineering, 4 (2009).
S. V. Apte, K. Mahesh, P. Moin and J. C. Oefelein, Large-Eddy simulation of swirling particle laden flows in a coaxial combustor, Journal of Mutliphase Flow, 29 (2003) 1311–1331.
J. C. Oefelein, V. Sankaran and T. G. Drozda, Large eddy simulation of swirling particle laden flow in a model axisymmetric combustor, Combustion Institute, 31 (2007) 2291–2299.
P. Moin and C. D. Pierce, Large eddy simulation of a coaxial jet combustor, Technical report, Stanford University, Mech. Engg. Deptt., USA (1999).
K. Mahesh, G. Constantinescu, S. Apte, G. Iaccarino, F. Ham and P. Moin, Large-eddy simulation of reacting turbulent flows in complex geometries, Journal of Applied Mechanics, 73 (2006) 374–381.
W. W. Kim, S. Menon and C. H. Mongia, Large eddy simulation of a gas turbine combustor flow, Combustion Science and Technology, 143 (1999) 25–62.
F. F. Grinstein and C. Fureby, LES studies of the flow in a swirl gas combustor, Combustion institute, 30 (2005) 1791–1798.
M. Sommerfeld and H. H. Qiu, Detailed measurements in a swirling particulate two-phase flow by a phase-Doppler anemometer, International Journal of Heat and Fluid Flow, 12(1) (1991) 20–28.
M. Sommerfeld, A. Ando and D. Wennerberg, Swirling, particle-laden flows through a pipe expansion, Journal of Fluids Eng-T, ASME, 114 (1992) 648–656.