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Large Eddy Simulation of Turbulent Flow Inside a Sudden Expansion Cylinder Chamber

급 확대부를 갖는 실린더 챔버 내부 유동에 관한 LES

  • Published : 2001.07.01

Abstract

A large eddy simulation(LES) is performed for turbulent flow in a combustion device. The combustion device is simplified as a cylinder with sudden expansion. To promote turbulent mixing and to accommodate flame stability, a flame holder is attached inside the combustion chamber. Emphasis is placed on the flow details with different geometries of the flame holder. The subgrid scale models are applied and validated. The simulation code is constructed by using a general coordinate system based on the physical contravariant velocity components. The calculated Reynolds numbers are 5000 and 50000 based on the bulk velocity and the diameter of inlet pipe. The predicted turbulent statistics are evaluated by comparing with the LDV measurement data. The agreement of LES with the experimental data is shown to be satisfactory.

Keywords

References

  1. Amano, K., Inage, S., Yamakata, M. Taniguchi, M., 1993, 'Numerical Simulation of Turbulent Pre-mixed Flame Around a Bluff Body Using the $\kappa-\varepsilon$ and Flamelet Models,' 9th Symp. on Turbulent Shear Flows, Kyoto, Japan
  2. Sato, A., Shizawa, T. and Honami, S., 1991, 'Study on the Flow Behavior in a Dump Diffuser,' Trans. JSME, Vol. B57 (in Japanese), pp. 4029-4035
  3. Ogata, H., Shizawa, T. and Honami, S., 1994, 'Study on Dump Diffuser Combustor,' Trans. JSME, Vol. B60 (in Japanese), pp. 4039-4044
  4. Akselvoll, K. and Moin, P., 1996, 'Large-Eddy Simulation of Turbulent Confined Coannular Jets,' J. Fluid Mech., Vol. 315, pp. 387-411 https://doi.org/10.1017/S0022112096002479
  5. Johnson, B. V. and Bennet, J. C., 1984, 'Statistical Characteristics of Velocity, Concentration, Mass Transport, and Momentum Transport for Coaxial Jet Mixing in a Confined Duct,' J. of Gas Turbines and Power, Vol. 106, pp. 121-127
  6. Smagorinsky, J., 1963, 'General Calculation Experiments with the Primitive Equations. Ⅰ. The Basic Experiment,' Monthly Weather Review, Vol. 91, pp. 99-164 https://doi.org/10.1175/1520-0493(1963)091<0099:GCEWTP>2.3.CO;2
  7. Germano, M., Piomelli, U., Moin, P., Cabot, W. H., 1991, 'A Dynamic Subgrid-Scale Eddy Viscosity Model,' Physics of Fluids, Vol. A3, 1991, pp. 1760-1765 https://doi.org/10.1063/1.857955
  8. Meneveau, C., Lund, T. S. and Cabot, W., 1994, 'A Largrangian Dynamic Subgrid-Scale Model for Turbulence,' Proceedings of the Summer Program (Center for Turbulence Research), pp. 1-29
  9. Van Driest, E. R., 1956, 'On Turbulent Flow Near a Wall,' J. of the Aeronautical Sciences, Vol. 23, pp. 1007-1011
  10. Piomelli, U., 1993, 'High Reynolds Number Calculations Using the Dynamic Subgrid-Scale Stress Model,' Physics of Fluids, Vol. A5, pp. 1484-1490
  11. Akselvoll, K. and Moin, P., 1993, 'Large Eddy Simulation of a Backward Facing Step Flow, in Eng. Turb. Modelling and Exp. 2,' edited by Rodi, W. and Martelli, F., pp. 303-313
  12. Eggels, J. G. M., Unger, F., Weiss, M. H., Westerweel, J., Adrian, R. J., Friedrich, R., Nieuwstadt, F. T. M., 1994, 'Fully Developed Turbulent Pipe Flow : A Comparison Between Direct Numerical Simulation and Experiment,' J. Fluid Mech., Vol. 268, pp. 175-209 https://doi.org/10.1017/S002211209400131X
  13. Antonopoulos-Domis, M., 1981, 'Large-Eddy Simulation of a Passive Scalar in Isotropic Turbulence,' J. Fluid Mech., Vol. 104, pp. 55-79 https://doi.org/10.1017/S0022112081002814
  14. Deardorff, J. W., 1970, 'A Numerical Study of Three Dimensional Turbulent Channel Flow at Large Reynolds Number,' J. Fluid Mech., Vol. 41, pp. 453-480 https://doi.org/10.1017/S0022112070000691
  15. Mansour, N. N., Feriger, J., Reynolds, W. C., 1978, 'Large-Eddy Simulation of Turbulent Mixing Layer,' Rep. No. TF-11, Stanford University
  16. Liepmann, D. and Gharib, M., 1992, 'The Role of Streamwise Vorticity in the Near-Field Entrainment of Round Jets,' J. Fluid Mech.., Vol. 245, pp. 643-668 https://doi.org/10.1017/S0022112092000612
  17. Kobayashi, T. et. al., 1999, 'Modeling for Flow Simulation of Combustion Chambers, Rep. No. 8H-170-1, MEDO (in japanses), Japan