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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
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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 

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