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Changes in Conical Diffuser Performance by Swirl Addition

Published online by Cambridge University Press:  07 June 2016

R.S. Neve  and
N.E.A. Wirasinghe
R.S. Neve
Affiliation:
(The City University, London)
N.E.A. Wirasinghe
Affiliation:
(The City University, London)
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Summary

It has been found that the addition of a whirl velocity component to an otherwise axial flow in a conical diffuser can lead to improvements in static pressure recovery and in efficiency, according to a restricted definition. Diffusers of total conical angle 10, 20 and 30 deg. were tested in detail; improvements were evident only in the last two, which would otherwise have suffered from flow separation problems caused by their relatively large divergence angles. The agency for improvement seems to be a beneficial redistribution of axial velocities.

Type
Research Article
Information
Aeronautical Quarterly , Volume 29 , Issue 3 , August 1978 , pp. 131 - 143
Copyright
Copyright © Royal Aeronautical Society. 1978

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References

1 Andres, K. Verein Deut. Ing. p 76, 1909 Google Scholar
2 Peters, H. Conversion of energy in cross-sectional divergencies under different conditions of inflow. N.A.C.A. Tech. Memo. 734, 1934.Google Scholar
3 Liepe, F. Efficiency of slender conical diffusers with swirling flow. Maschineribautechnik, Vol. 4, No. 8, pp 405–412, 1960 (In German).Google Scholar
4 Dewoestine, R.V. Van An experimental investigation of boundary layer development and swirling flow in conical diffusers. Ph.D. Thesis, Purdue Univ., 1969.Google Scholar
5 Patterson, G.N., Modern diffuser design. Aircraft Engineering, Vol. 10, p 267, 1938.Google Scholar
6 Tyler, R.A., Williams, R.G. Diffuser performance with distorted inflow. Proas. I. Mech. E., Vol. 182, Pt. 3D, pp 115–125, 1967/68.Google Scholar
7 Cockrell, D.J., Markland, E. A review of incompressible diffuser flow. Aircraft Engineering, Oct. 1963.CrossRefGoogle Scholar