Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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An Experimental Study on the Flow Stabilization in the Downstream Region of a Butterfly-Type Valve

버터플라이 밸브 하류 유동의 안정화에 관한 연구

  • Published : 2000.11.01
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Abstract

A flow stabilizer, which is made of a honeycomb and three different mesh screens, is located downstream of a butterfly-type valve, for the reduction of flow disturbances behind the valve. Mean flow and turbulence measurements as well as flow visualizations are conducted in the downstream region of the deepens the non-uniformity of the streamwise velocity component and turbulence. The mesh screens considerably reduce the turbulence and enhance the uniformity of mean velocities. The combination of the honeycomb and the three mesh screens results in an efficient reduction in the flow disturbances. In addition, the flow stabilizer proves to have a good performance in the suppression of turbulence at a short distance.

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References

  1. 박상원, 이상우, 2000, '공기조화용 버터플라이 밸브 하류에서의 3차원 유동특성,' 대한기계학회논문집 (B), 제24권, 제2호, pp. 260-269
  2. Addy, A.L., Morris, M.J., Dutton, J.C., 1985, 'An Investigation of Compressible Flow Characteristics of Butterfly Valves,' ASME Journal of Fluids Engineering, Vol. 107, pp. 512-517
  3. Eom, K., 1988, 'Performance of Butterfly Valves as a Flow Controller,' ASME Journal of Fluids Engineering, Vol. 110, pp. 16-19
  4. Morris, M.J. and Dutton, J.C., 1989, 'Aerodynamics Torque Characteristics of Butterfly Valves in Compressible Flow,' ASME Journal of Fluids Engineering, Vol. 111, pp. 392-399
  5. Shim, E.B. and Chang, K.S., 1994, 'Three-Dimensional Vortex Flow Past a Tilting Disc Valve Using a Segregated Finite Element Scheme,' Computational Fluid Dynamics Journal, Vol. 3, pp. 205-222
  6. Lumley, J.L., 1964, 'Passage of a Turbulent Stream Through Honeycomb of Large Length-to-Diameter Ratio,' ASME Journal of Basic Engineering, Vol 86, pp. 218-220
  7. Lumley, J.L. and McMahon, J.F., 1967, 'Reducing Water Tunnel Turbulence by Means of Honeycomb,' ASME Journal of Basic Engineering, Vol. 89, pp. 764 - 770
  8. Ribbins, B.E., 1978, 'Water Tunnel Turbulence Measurements Behind a Honeycomb,' Journal of Hydronautics, Vol. 12, pp. 122 - 128
  9. Loehrke, R. . and Nagib, H.M., 1976, 'Control of Freestream Turbulence by Means of Honeycombs: A Balance Between Suppression and Generation,' ASME Journal of Fluids Engineering, Vol. 98, pp. 342 - 353
  10. Schbauer, G.B., Spngenberg, W. G. and Klebanoff, P.S., 1950, 'Aerodynamic Characteristics of Damping Screens,' NACA TN 2001
  11. Tan-atichat, J., Nagib, H.M., and Loehrke, R.L., 1982, 'Interaction of Free Stream Turbulence with Screens and Grids: A Balance Between Turbulence Scales,' Journal of Fluid Mechanics, Vol. 114, pp. 501 - 528 https://doi.org/10.1017/S0022112082000275
  12. Scheiman, J. and Brooks, J.D., 1981, 'Comparison of Experimental and Theoretical Turbulence Reduction from Screens, Honeycomb, and Honeycomb-Screen Combinations,' Journal of Aircraft, Vol 18, pp. 638 - 643
  13. Xia, L., Farell, C. and Kavanagh, P., 1990, 'Experimental Investigation of the Unsteady Flow Behind Screens and Honeycombs,' Proceedings, 36th International Instrumentation Symposium, Instrument Society of America, pp. 367 - 376
  14. Farell, C. and Youssef, S., 1996, 'Experiments on Turbulence Management Using Screens and Honeycombs,' ASME Journal of Fluids Engineering, Vol. 118 pp. 26-32
  15. ISO 5167-1:1991(E), 1991, 'Measurement of Fluid by Means of Pressure Differential Devices - Part 1: Orifice Plates, Nozzles and Venturi Tubes Inserted in Circular Cross-Section Conduits Running Full,' International Organization of Standardization
  16. Treaster, A.L. and Yocum, A.M., 1979, 'The Calibration and Application of Five-Hole Probes,' ISA Transactions, Vol. 18, pp. 23-34
  17. 이상우, 윤태진, 1997, '5공프로브의 보정에 영향을 주는 유동변수들에 대한 실험적 연구,' 대한기계학회논문집 (B), 제21권, pp. 637-649
  18. Meta, R. D. and Brdshaw, P., 1979, 'Design Rules for Small Low Speed Wind Tunnel,' Aeronautical Journal, Nov., pp. 443- 449
  19. Abernethy, R. B., Benedict, R. P. and Dowdell, R. B., 1985, 'ASME Measurement Uncertainty,' ASME Journal of Fluids Engineering, Vol. 107, pp. 161-164
  20. 이상우, 윤태진, 1996, '벽면근접거리가 소형 원추형 5공프로브의 보정에 미치는 영향,' 대한기계학회논문집 (B), 제20권, pp. 2693-2706