This paper describes how laser anemometry is particularly suited to the measurement of flows in and around turbomachinery. The operation and use of both laser Doppler and laser transit anemometry are discussed. Finally, some measurements taken at Cranfield Institute of Technology using laser anemometers are presented.
Get full access to this article
View all access options for this article.
References
1.
LakshminarayanaB.Methods of predicting the tip clearance effects in axial flow turbomachinery. J. Basic Engng, 1970, 104, 467–482.
2.
FowlerH.An investigation into the flow processes in a centrifugal compressor impeller. NRC, ME220, 1966.
3.
BryanstonCross P. J.High speed flow visualisation. Progress in Aerospace Sciences, 1986, 23, 85–104.
4.
GrantI.SmithG. H.Modern developments in particle image velocimetry. Optics and Lasers in Engineering, 1988, 9, 245–264.
5.
LakshminarayanaB.Techniques for aerodynamic and turbulence measurements in turbomachinery rotors. ASME Symposium on Measurement Methods in Rotating Components of Turbomachinery, 1980.
6.
DavinoR.PouagareM.LakshminarayanaB.Three-dimensional flow field in tip region of a compressor rotor passage, Parts I and II. Trans. ASME, J. Engng Pwr, 1982, 104, 760–781.
7.
EckardtD.Instantaneous measurements in the jet/wake discharge flow of a centrifugal compressor impeller. Trans. ASME, J. Engng Pwr, Ser. A, 1975, 97, 337–346.
8.
HulstH. C. V.Light scattering of small particles, 1957 (John Wiley, New York).
9.
EckardtD.Advanced experimental techniques for turbomachinery developments. Principal lecture series No. 1 (Ed. JapiskeD.), 1986, Ch. 1 (Concepts ETI).
10.
DurstF.MellingA.WhitelawJ.Principles and practice of laser Doppler anemometry, 1976 (Academic Press).
11.
RuddM. J.A new theoretical model for the laser Doppler anemometer. J. Phys. E., 1969, 2, 723–726.
12.
RobinsonD. M.CheeW. P.Diffraction analysis of Doppler signal characteristics for a cross beam laser Doppler velocimeter. Appl. Opt. 1975, 14, 2177–2181.
SchodlR.On the development of a new optical method for flow measurements in turbomachines. ASME Gas Turbine Conference, Zurich, Switzerland, 1974.
20.
RossM. M.Transit laser anemometry data reduction for flow in industrial turbomachinery. Optica Acta, 1980, 27 (4), 511–528.
21.
AbbissJ. B.Photon correlation velocimetry in aerodynamics. Photon correlation spectroscopy and velocimetry (Ed. CumminsH. Z.PikeE. R.), 1977, 386–424 (Plenum Press).
22.
PowellJ.StrazisarA.SeasholzR.Efficient laser anemometry for intra-rotor flow mapping in turbomachinery. Symposium for Intra-rotor Flow Mapping in Turbomachinery, ASME Gas Turbine Conference, New Orleans, 1980.
23.
SchodlR.ForsterW.A multi colour fiber optic laser two focus velocimeter for three-dimensional flow analysis. AIAA-88-3030 Boston, July 1988.
24.
AhmedN. A.ElderR. L.ForsterC. P.JonesJ. D. C.Miniature laser anemometer for three-dimensional measurements. Measmt Sci. Technol., 1990, 1, 272–276.
25.
ElderR. L.FosterC. P.GillM.E.Application of Doppler and transit laser anemometry in small turbomachines. Advanced instrumentation for aero-engine components, CP-33, May 1986 (AGARD).
26.
ElderR. L.GillM. E.A discussion of factors affecting surge in centrifugal compressors. ASME Gas Turbine Conference, January 1984, paper 89-GT-194.
27.
AhmedN. A.ElderR. L.LoboM.Flow separation in a high speed impeller passage. IMechE Conference on Internal combustion engine research in UK universities, colleges and polytechnics, January 1991, 1–8 (Mechanical Engineering Publications, London).
28.
MirzabozorgM.Measurement and computation of the flow in an axial blade row. PhD thesis, Cranfield, 1987.
29.
TanS. C.A study of particle trajectories in a gas turbine inlet. PhD thesis, Cranfield, 1988.
30.
AhmedN. A.ElderR. L.Flow investigation in a small high speed impeller passage using laser anemometry. ASME Gas Turbine and Aeroengine Congress and Exposition, Brussels, Belgium, June 11–14 1990, paper 90-GT-233.