Hostname: page-component-f554764f5-fr72s Total loading time: 0 Render date: 2025-04-09T00:17:53.211Z Has data issue: false hasContentIssue false
  • English
  • Français

A note on the discharge coefficients of annular orifices

Published online by Cambridge University Press:  04 July 2016

C. J. Hooke ,
M. A. Hajihosseinloo  and
D. Walton
C. J. Hooke
Affiliation:
Department of Mechanical Engineering, The University of Birmingham, UK
M. A. Hajihosseinloo
Affiliation:
Department of Mechanical Engineering, The University of Birmingham, UK
D. Walton
Affiliation:
Department of Mechanical Engineering, The University of Birmingham, UK
Get access Rights & Permissions [Opens in a new window]

Extract

Discharge coefficients for annular orifices formed between pistons and a cylindrical bore are reported for twelve pistons having orifice length to gap ratios in the range 12 to 50. Square-edged, radiused and tapered orifices are examined at high fluid pressure differentials with Reynolds number varying in the range 500-4000. The radial gaps were determined by examining the flow for each piston geometry at low Reynolds numbers.

Type
Research Article
Information
The Aeronautical Journal , Volume 93 , Issue 925 , May 1989 , pp. 183 - 188
Copyright
Copyright © Royal Aeronautical Society 1989 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

1. Polents, L. M. Flow through orifices. Plant Eng, March 1980, 34, 243–246.Google Scholar
2. Fluid Meters, Their Theory and Applications. Report of ASME Research Committee on Fluid Meters, 1971.Google Scholar
3. Lakshmano Rao, N. S., Alvi, S. H. and Sridharan, G. A. Loss characteristics of orifices and nozzles. Trans ASME, J Fluid Eng Industry, September 1978, 100, 299–307.Google Scholar
4. Akers, A. Design of an orifice coefficient meter. Fluid Power— 36th National Conference Proceedings, Cleveland, USA. 28-30 October, 1980.Google Scholar
5. Hall, G. W. Analytical determination of the discharge characteristics of cylindrical-tube orifices. J Mech Eng Sci, 1963, 5, 91–97.Google Scholar
6. Chen, C. J. and Macagno, E. O. Fluid and Thermodynamic Characteristics of Compressible Recoil Mechanisms. Report DAAG 29-78-0120 for US Army Research Office by Energy Division, Iowa Institute of Hydraulic Research, Iowa University, August 1979.Google Scholar
7. Beitler, S. R. Orifice Coefficients. ASME Paper number 79-WA/FM-4.Google Scholar
8. Akers, A. Discharge coefficients for an annular orifice with a moving wall. In: 3rd International Fluid Power Symposium, 9-11 May 1973.Google Scholar
9. Bell, K. J. and Bergellin, O. P. Flow through annular orifices. Transactions ASME. Paper number 56-S-22, April 1964. 593–601.Google Scholar
10. Spikes, R. H. and Pennington, G. A. Discharge coefficient of small submerged orifices. Proc Inst Mech Eng 1959, 173, 661–674.Google Scholar
11. Bergwerk, W. Flow pattern in diesel nozzle spray holes. Proc Inst Mech Eng, 1959, 173, 655–660.Google Scholar
12. Duggins, R. K. Cavitation characteristics of long orifices in pipes. In: Symposium on Two Phase Flow and Cavitation in Power Generation Systems, International Association for Hydraulic Research, Grenoble, France, March 1976.Google Scholar
13. Lichtarowicz, A. and Pearce, I. D. Cavitation and aeration effects on long orifices, Conference on Cavitation organised by The Institution of Mechanical Engineers. 1974, 129-144.Google Scholar
14. Yamaguchi, A. Cavitation characteristics of long orifices in hydraulic systems. In: 5th International Fluid Power Symposium, 13-15 September 1978. G3, 45-56.Google Scholar
15. Lichtarowicz, A. Flow and force characteristics of flapper valves, In: 3rd International Fluid Power Symposium, 9-11 May 1973, Bl, 1-24.Google Scholar
16. Yamaguchi, A. and Suzuki, T. Cavitation in hydraulic fluids, Part 3: On cavitation in long orifices, Fluid Q 1980, 12, (4), 21–38.Google Scholar
17. Hajihosseinloo, M. A. Performance of Hydraulic Gun Buffers, PhD Thesis, Department of Mechanical Engineering, University of Birmingham, August 1986.Google Scholar
18. Davies, S. J. and White, C. N. An experimental study of the flow of the water in pipes of rectangular section, Proc R Soc A, 1928, 119, 92–107.Google Scholar
19. Lichtarowicz, A., Duggins, R. K. and Markland, E. Discharge coefficients for incompressible non-cavitating flow through long orifices, J Mech Eng Sci, 1965, 7, 210–219.Google Scholar
20. Lundgren, T. S., Sparrow, E. M. and Starr, J. B. Pressure drop due to the entrance region in ducts of arbitrary cross section, Trans ASME, Paper No 63-WA-93, September 1964, 620-626.Google Scholar
21. Langhaar, H. L. Steady flow in the transition region of a straight tube. J Appl Mech, Vol 9, Trans ASME, 1942, 64, 55–58.Google Scholar
22. Irvine, J. and Eckert, E. R. G. Comparison of experimental information and analytical prediction for laminar entrance pressure drop in ducts with rectangular and triangular sections, J Appl Mech, Vol 25, Trans ASME, 1958, 80, 288–290.Google Scholar