This paper has experimentally and numerically studied the windage heating in a shrouded rotor-stator disk system with superimposed flow. Temperature rise in the radius direction on the rotating disk is linked to the viscous heating process when cooling air flows through the rotating component. A test rig has been developed to investigate the effect of flow parameters and the gap ratio on the windage heating, respectively. Experimental results were obtained from a 0.45 m diameter disk rotating at up to 12,000 rpm with gap ratio varying from 0.02 to 0.18 and a stator of the same diameter. Infrared temperature measurement technology has been proposed to measure the temperature rise on the rotor surface directly. The PIV technique was adapted to allow for tangential velocity measurements. The tangential velocity data along the radial direction in the cavity was compared with the results obtained by CFD simulation. The comparison between the free disk temperature rise data and an associated theoretical analysis for the windage heating indicates that the adiabatic disk temperature can be measured by infrared method accurately. For the small value of turbulence parameter, the gap ratio has limited influence on the temperature rise distribution along the radius. As turbulence parameter increases, the temperature rise difference is independent of the gap ratio, leaving that as a function of rotational Reynolds number and throughflow Reynolds number only. The PIV results show that the swirl ratio of the rotating core between the rotor and the stator has a key influence on the windage heating.

References

References
1.
Dorfman
,
L. A.
,
1963
,
Hydrodynamic Resistance and the Heat Loss of Rotating Solids
,
Oliver & Boyd
,
Edinburgh
.
2.
Bayley
,
F. J.
, and
Owen
,
J. M.
,
1969
, “
Flow Between a Rotating and a Stationary Disc
,”
Aeronaut. Q.
,
20
, pp.
333
354
.
3.
Vaughan
,
C. M.
,
1987
, “
A Numerical Investigation Into the Effect of an External Flow Field on the Sealing of a Rotor-Stator Cavity
,” Ph.D. thesis, University of Sussex, Brighton, UK.
4.
Chew
,
J.
,
1985
, “
Effect of Frictional Heating and Compressive Work in Rotating Axisymmetric Flow
,”
ASME J. Heat Transfer
,
107
(
4
), pp.
984
986
.10.1115/1.3247537
5.
Owen
,
J.
,
1971
, “
The Effect of Forced Flow on Heat Transfer From a Disc Rotating Near a Stator
,”
Int. J. Heat Mass Transfer
,
14
(
8
), pp.
1135
1147
.10.1016/0017-9310(71)90209-2
6.
Owen
,
J. M.
,
1984
, “
Fluid Flow and Heat Transfer in Rotating Disc Systems
,”
Heat and Mass Transfer in Rotating Machinery
, Vol.
1
,
Hemisphere Publishing
,
Washington, DC
, pp.
81
103
.
7.
Chew
,
J. W.
, and
Vaughan
,
C. M.
,
1988
, “
Numerical Predictions for the Flow Induced by an Enclosed Rotating Disc
,”
NASA STI/Recon Technical Report No. 88
, 28281.
8.
Owen
,
J. M.
, and
Rogers
,
R. H.
,
1989
,
Flow and Heat Transfer in Rotating-Disc Systems
,
Research Studies Press
,
Taunton, MA
.
9.
Gartner
,
W.
,
1997
, “
A Prediction Method for the Frictional Torque of a Rotating Disc in a Stationary Housing With Superimposed Radial Outflow,
” ASME Paper No. 97-GT-204.
10.
Owen
,
J. M.
,
1989
, “
An Approximate Solution for the Flow Between a Rotating and a Stationary Disk
,”
ASME J. Turbomach.
,
111
(
3
), pp.
323
332
.10.1115/1.3262275
11.
Poncet
,
S.
,
Chauve
,
M.-P.
, and
Schiestel
,
R.
,
2005
, “
Batchelor Versus Stewartson Flow Structures in a Rotor-Stator Cavity With Throughflow
,”
Phys. Fluids
,
17
(
7
), p.
075110
.10.1063/1.1964791
12.
Geis
,
T.
,
Ebner
,
J.
,
Kim
,
S.
, and
Wittig
,
S.
,
2001
, “
Flow Structures Inside a Rotor-Stator Cavity
,”
Int. J. Rotating Machinery
,
7
(
4
), pp.
285
300
.10.1155/S1023621X01000240
13.
Geis
,
T.
,
Rorrenkolber
,
G.
,
Dittmann
,
M.
,
Richter
,
B.
,
Dullenkopf
,
K.
, and
Wittig
,
S.
,
2002
, “
Endoscopic PIV-Measurements in an Enclosed Rotor-Stator System With Pre-Swirled Cooling Air
,”
Proceedings of the 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics
,
Lisbon, Portugal
, July 8–11, pp.
8
11
.
14.
Dibelius
,
G.
,
Radtke
,
F.
, and
Ziemann
,
M.
,
1984
, “
Experiments on Friction, Velocity and Pressure Distribution of Rotating Disks
,”
Heat and Mass Transfer in Rotating Machinery
, Vol.
1
,
Hemisphere Publishing
,
Washington, DC
, pp.
117–130
.
15.
Coren
,
D.
,
Childs
,
P. R. N.
, and
Long
,
C. A.
,
2009
, “
Windage Sources in Smooth-Walled Rotating Disc Systems
,”
Proc. Inst. Mech. Eng. Part C-J. Eng. Mech. Eng. Sci.
,
223
(
4
), pp.
873
888
.10.1243/09544062JMES1260
16.
Miles
,
A. L.
,
2012
, “
An Experimental Study of Windage Due to Rotating and Static Bolts in an Enclosed Rotor-Stator System
,” Ph.D. thesis, University of Sussex, Brighton, UK.
17.
Haaser
,
F.
,
Jack
,
J.
, and
McGreehan
,
W.
,
1988
, “
Windage Rise and Flowpath Gas Ingestion in Turbine Rim Cavities
,”
ASME J. Eng. Gas Turbines Power
,
110
(
1
), pp.
78
85
.10.1115/1.3240090
18.
Daily
,
J. W.
, and
Nece
,
R. E.
,
1960
, “
Chamber Dimension Effects on Induced Flow and Frictional Resistance of Enclosed Rotating Disks
,”
ASME J. Basic Eng.
,
82
, pp.
217
230
.10.1115/1.3662532
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