Journal of Mechanical Science and Technology

  • 제17권1호
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  • Pages.129-138
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  • 2003
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Experimental Validation of Numerical Model for Turbulent Flow in a Tangentially Fired Boiler with Platen Reheaters

  • Zheng, Chang-Hao (State Key Laboratory of Coal Clean Combustion, Tsinghua University) ;
  • Xu, Xu-Chang (State Key Laboratory of Coal Clean Combustion, Tsinghua University) ;
  • Park, Jong-Wook (School of Mechanical and Automotive Engineering, Sunchon National University)
  • 발행 : 2003.01.01
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초록

A 1 : 20 laboratory scale test rig of a 200 MW tangentially fired boiler is built up with completely simulated structures such as platen heaters and burners. Iso-thermal turbulent flow in the boiler is mapped by 3-D PDA (Particle Dynamic Analyzer). The 3-D numerical models for the same case are proposed based on the solution of к-$\varepsilon$ model closed RANS (Reynolds time-Averaged Navier-Stokes) equations, which are written in the framework of general coordinates and discretized in the corresponding body-fitted meshes. Not only are the grid lines arranged to fit the inner/outer boundaries. but also to align with the streamlines to the best possibility in order to reduce the NDE (numerical diffusion errors). Extensive comparisons of profiles of mean velocities are carried out between experiment and calculation. Predicted velocities in burner region were quantitatively similar with measured ones, while those in other area have same tendency with experimental counterpart.

키워드

참고문헌

  1. Adrian, R. J. and Yao, C. S., 1987, 'Power Spectra of Fluid Velocities Measured by Laser Doppler Velocimetry,' Experiments in Fluids, Vol. 5, No. 1, pp. 17-28 https://doi.org/10.1007/BF00272419
  2. Choi, D. S., Choi, G. M. and Kim, D. J., 2002, 'Spray Structures and Vaporizing Characteristics of a GDI Fuel Spray,' KSME International Journal, Vol. 16, No. 7, pp. 999-1008
  3. Fan, J. R., Zha, X. D., Sun, P. and Cen, K. F., 2001, 'Simulation of Ash Deposit in a Pulverized Coal-Fired Boiler,' Fuel, Vol. 80, No. 5, pp. 645-654 https://doi.org/10.1016/S0016-2361(00)00134-4
  4. Ferziger, J. H. and Peric, M., 1995, Computational Methods for Fluids Dynamics, Springer Press
  5. Honnery, D. R. and Kent, J. H., 1989, 'Furnace Flow Modeing : Physical and Computational,' J. of the Inst. of Energy, Sep., pp. 169-177
  6. Kim, S. J. and Lee, C. M., 2002, 'Numerical Investigation of Cross-Flow Around a Circular Cylinder at a Low-Reynolds Number Flow Under an Electromagnetic Force,' KSME International Journal, Vol. 16, No. 3, pp. 363-375
  7. Luo, X. L., Boyd, R. K. and Kent, J. H., 1991, 'Computational Investigation of Burnout in a Furnace Firing Pulverized Coal,' J. of Inst. of Energy, Vol. 64, Dec., pp. 230-238
  8. Sandro, D. S., 2000, 'Three Dimensional Modeling of Pulverized Coal Combustion in a 600 MW Corner Fired Boiler,' J. of Thermal Science, Vol. 9, No. 4, pp. 376-380 https://doi.org/10.1007/s11630-000-0081-3
  9. Smoot, L. D. and Pratt, D. T., 1979, Pulverized-Coal Combustion and Gasification : Theory and Applications for Continuous Flow Processes, Plenum Press
  10. Su, J. T., 1999, Experimental Study on T-Fired Boiler to Improve Cold Gas-Solid Flow in Furnace, MEng. thesis, Tsinghua University
  11. Thompson, J. F., Warsi, Z. U. A. and Marstin, C. W., 1985, Numerical Grid Generation, North-Holland
  12. Wesseling, P., Segal, A., Kassels, C. G. M. and Bijl, H., 1998, 'Computing Flows on General Two-Dimensional Nonsmooth Staggered Grids,' J. of Engineering Mathematics, Vol. 34, No. 1-2, pp. 21-44 https://doi.org/10.1023/A:1004341115180
  13. Xu, H. and Zhang, C., 1998, 'Study of the Effect of the Non-Orthogonality for Non-Staggered Grids,' Int. J. for Numer. Meth. Fluids, Vol. 28, No. 9, pp. 1265-1280 https://doi.org/10.1002/(SICI)1097-0363(19981215)28:9<1265::AID-FLD726>3.0.CO;2-1
  14. Yang, H. Q., Habchi, S. D. and Przekwas, A. J., 1994, General Strong Conservation Formulation of Navier-Strong Conservation Formulation of Navier-Stokes Equations in Nonorthogonal Curvilinear Coordinates,' AIAA, Vol. 32, No. 5, pp. 936-941 https://doi.org/10.2514/3.12077