This paper describes the measurement and processing of turbulence data from multistage low-speed compressors. Measurements were made at the same relative positions in three four-stage compressors, each having different levels of the design stage loading coefficient. A new method of data processing to calculate turbulence intensities and integral length scales is outlined. Using this method, integral length scales have been measured in turbomachinery flows for the first time. It is shown how the turbulence intensity and integral length scale vary with position in the blade passage, with changing flow coefficient and with the value of the design stage loading coefficient. The results have been used to specify representative inlet conditions for experimental rigs and to improve the application of CFD turbulence models to turbomachinery modeling.

1.
Baines
W. D.
, and
Peterson
E. G.
,
1951
, “
An Investigation of Flow Through Screens
,”
Trans. ASME
, Vol.
73
, pp.
467
480
.
2.
Cherrett
M. A.
, and
Bryce
J. D.
,
1991
, “
Unsteady Viscous Flow in a High Speed Core Compressor
,”
ASME JOURNAL OF TURBOMACHINERY
, Vol.
114
, pp.
287
294
.
3.
Evans, B. J., 1971, “Free-Stream Turbulence Effects in a Compressor Cascade,” Ph.D. Dissertation, University of Cambridge, United Kingdom.
4.
Evans, R. L., 1976, “Some Turbulence and Unsteadiness Effects in Turbomachinery,” in: S.N.B. Murphy, Turbulence in Internal Flows, Hemisphere Publishing Corp., New York.
5.
Frenkiel, F. N., 1948, “Etude Statistique de la turbulence, 1 Mesure de la turbulence avec un fil chaud non-compense, 2 Influence de la longueur d’un fil chaud compense sur la mesure de la turbulence,” O.N.E.E.A. Rapp. Tech. 37.
6.
De Haller, P., 1953, “Das Verhalten von Tragflugelgittern in Axialverdichtern und in Windkanal,” Brennstoff-Warme-Kraft, Vol. 5, No. 10.
7.
Roach
P. E.
,
1987
, “
The Generation of Nearly Isotropic Turbulence by Means of Grids
,”
Journal of Heat and Fluid Flow
, Vol.
8
, No.
2
, pp.
82
92
.
8.
Schlichting, H., and Das, A., 1969, “On the Influence of Turbulence Level on the Aerodynamic Losses in Axial Turbomachines,” Proceedings of the Symposium on Flow Research on Blading, Brown Boveri and Co. Ltd., Baden, Switzerland; also in: L. S. Dzung, ed., Flow Research on Blading, Elsevier Publishing Company, 1970.
9.
Uberoi
M. S.
, and
Kovasznay
L. S. G.
,
1953
, “
On Mapping and Measurement of Random Fields
,”
Quarterly of Applied Mathematics
, Vol.
10
, pp.
375
393
.
10.
Walraevens
R. E.
, and
Cumpsty
N. A.
,
1995
, “
Leading Edge Separation Bubbles on Turbomachine Blades
,”
ASME JOURNAL OF TURBOMACHINERY
, Vol.
117
, this issue, pp.
115
125
.
11.
Wisler
D. C.
,
Bauer
R. C.
,
Okiishi
T. H.
,
1987
, “
Secondary Flow, Turbulent Diffusion and Mixing in Axial-Flow Compressors
,”
ASME JOURNAL OF TURBOMACHINERY
, Vol.
109
, pp.
455
482
.
12.
Wyngaard
J. C.
,
1968
, “
Measurement of Small-Scale Turbulence Structure With Hot Wires
,”
Journal of Physics E
, Vol.
1
, pp.
1105
1108
.
13.
Wyngaard
J. C.
,
1969
, “
Spatial Resolution of the Vorticity Meter and Other Hot-Wire Arrays
,”
Journal of Physics E
, Vol.
2
, pp.
983
987
.
This content is only available via PDF.
You do not currently have access to this content.