Flow in the internal three-pass serpentine rib turbulated passages of an advanced high pressure rotor blade is simulated on a 1:1 scale in the laboratory. Tests to measure the effect of rotation on the Nusselt number are conducted at rotation numbers up to 0.4 and Reynolds numbers from 75,000 to 165,000. To achieve this similitude, pressurized Freon R134a vapor is utilized as the working fluid. Experimental heat transfer coefficient measurements are made using the copper-plate regional average method. Regional heat transfer coefficients are correlated with rotation numbers. An increase in heat transfer rates due to rotation is observed in radially outward passes; a reduction in heat transfer rate is observed in the radially inward pass. Strikingly, a significant deterioration in heat transfer is noticed in the “hub” region—between the radially inward second pass and the radially outward third pass. This heat transfer reduction is critical for turbine cooling designs.

References

References
1.
Han
,
J.
,
1988
, “
Heat Transfer and Friction Characteristics in Rectangular Channels With Rib Turbulators
,”
ASME J. Heat Transfer
,
110
(
2
), pp.
321
328
.10.1115/1.3250487
2.
Han
,
J.
, and
Park
,
J.
,
1988
, “
Developing Heat Transfer in Rectangular Channels With Rib Turbulators
,”
Int. J. Heat Mass Transfer
,
31
(
1
), pp.
183
195
.10.1016/0017-9310(88)90235-9
3.
Park
,
J.
,
Han
,
J.
,
Ou
,
S.
, and
Boyle
,
R.
,
1992
, “
Heat Transfer Comparisons of Five Different Rectangular Channels With Parallel Angled Ribs
,”
Int. J. Heat Mass Transfer
,
35
(
11
), pp.
2891
2903
.10.1016/0017-9310(92)90309-G
4.
Taslim
,
M.
,
Li
,
T.
, and
Spring
,
S.
,
1997
, “
Measurements of Heat Transfer Coefficients and Friction Factors in Rib-Roughened Channels Simulating Leading-Edge Cavities of a Modern Turbine Blade
,”
ASME J. Turbomach.
,
119
(
3
), pp.
601
609
.10.1115/1.2841164
5.
Zhang
,
Y.
,
Gu
,
W.
, and
Han
,
J.
,
1994
, “
Augmented Heat Transfer in Triangular Ducts With Full and Partial Ribbed Walls
,”
J. Thermophys. Heat Transfer
,
8
(
3
), pp.
574
579
.10.2514/3.580
6.
Kiml
,
R.
,
Mochizuki
,
S.
, and
Murata
,
A.
,
2001
, “
Effects of Rib Arrangements on Heat Transfer and Flow Behavior in a Rectangular Rib-Roughened Passage: Application to Cooling of Gas Turbine Blade Trailing Edge
,”
ASME J. Heat Transfer
,
123
(
4
), pp.
675
681
.10.1115/1.1378019
7.
Stephens
,
M.
,
Chyu
,
M.
,
Tom
,
I.
, and
Civinskas
,
K.
,
1996
, “
Calculations and Measurements of Heat Transfer in a Square Duct With Inclined Ribs
,”
32nd Joint Propulsion Conference and Exhibit
,
Lake Buena Vista, FL
, July 1–3,
AIAA
Paper No. 96-3163.10.2514/6.1996-3163
8.
Su
,
G.
,
Chen
,
H.
,
Han
,
J.
, and
Heidmann
,
J.
,
2004
, “
Computation of Flow and Heat Transfer in Rotating Two-Pass Rectangular Channels (AR = 1:1, 1:2, and 1:4) With Smooth Walls by a Reynolds Stress Turbulence Model
,”
Int. J. Heat Mass Transfer
,
47
(
26
), pp.
5665
5683
.10.1016/j.ijheatmasstransfer.2004.07.019
9.
Taslim
,
M.
, and
Lengkong
,
A.
,
1998
, “
45 Deg Staggered Rib Heat Transfer Coefficient Measurements in a Square Channel
,”
ASME J. Turbomach.
,
120
(
3
), pp.
571
580
.10.1115/1.2841755
10.
Bunker
,
R.
, and
Bailey
,
J.
,
2003
, “
Heat Transfer and Friction in Channels With Very High Blockages 45 Degree Staggered Turbulators
,”
ASME
Paper No. GT2003-38611.10.1115/GT2003-38611
11.
Rallabandi
,
A. P.
,
Alkhamis
,
N.
, and
Han
,
J. C.
,
2011
, “
Heat Transfer and Pressure Drop Measurements for a Square Channel With 45 Deg Round Edged Ribs at High Reynolds Numbers
,”
ASME J. Turbomach.
,
133
(
3
), p.
031019
.10.1115/1.4001243
12.
Han
,
J.
,
Zhang
,
Y.
, and
Lee
,
C.
,
1991
, “
Augmented Heat Transfer in Square Channels With Parallel, Crossed, and V-Shaped Angled Ribs
,”
ASME J. Heat Transfer
,
113
(
3
), pp.
590
596
.10.1115/1.2910606
13.
Han
,
J.
, and
Zhang
,
Y.
,
1992
, “
High Performance Heat Transfer Ducts With Parallel Broken and V-Shaped Broken Ribs
,”
Int. J. Heat Mass Transfer
,
35
(
2
), pp.
513
523
.10.1016/0017-9310(92)90286-2
14.
Taslim
,
M.
, and
Spring
,
S.
,
1994
, “
Effects of Turbulator Profile and Spacing on Heat Transfer and Friction in a Channel
,”
J. Thermophys. Heat Transfer
,
8
(
3
), pp.
555
562
.10.2514/3.578
15.
Han
,
J.
,
Glicksman
,
L.
, and
Rohsenow
,
W.
,
1978
, “
An Investigation of Heat Transfer and Friction Factor for Rib-Roughened Surfaces
,”
Int. J. Heat Mass Transfer
,
21
(
3
), pp.
555
562
.10.1016/0017-9310(78)90113-8
16.
Chandra
,
P.
,
Fontenot
,
M.
, and
Han
,
J.
,
1998
, “
Effect of Rib Profiles on Turbulent Channel Flow Heat Transfer
,”
J. Thermophys. Heat Transfer
,
12
(
1
), pp.
116
118
.10.2514/2.6312
17.
Dipperey
,
D.
and
Sabersky
,
R. H.
,
1963
, “
Heat and Momentum Transfer in Smooth and Rough Tube at Various Prandtl Numbers
,”
Int. J. Heat Mass Transfer
,
6
(
5
), pp.
329
353
.10.1016/0017-9310(63)90097-8
18.
Han
,
J.
,
1984
, “
Heat Transfer and Friction in Channels With Two Opposite Rib-Roughened Walls
,”
ASME J. Heat Transfer
,
106
(
4
), pp.
774
781
.10.1115/1.3246751
19.
Wagner
,
J.
,
Johnson
,
B.
, and
Kopper
,
F.
,
1991
, “
Heat Transfer in Rotating Serpentine Passages With Smooth Walls
,”
ASME J. Turbomach.
,
113
(
3
), pp.
321
330
.10.1115/1.2927879
20.
Wagner
,
J.
,
Johnson
,
B.
,
Graziani
,
R.
, and
Yeh
,
F.
,
1992
, “
Heat Transfer in Rotating Serpentine Passages With Trips Normal to the Flow
,”
ASME J. Turbomach.
,
114
(
4
), pp.
847
857
.10.1115/1.2928038
21.
Johnson
,
B.
,
Wagner
,
J.
,
Steuber
,
G.
, and
Yeh
,
F.
,
1994
, “
Heat Transfer in Rotating Serpentine Passages With Trips Skewed to the Flow
,”
ASME J. Turbomach.
,
116
(
1
), pp.
113
123
.10.1115/1.2928265
22.
Johnson
,
B.
,
Wagner
,
J.
,
Steuber
,
G.
, and
Yeh
,
F.
,
1994
, “
Heat Transfer in Rotating Serpentine Passages With Selected Model Orientations for Smooth or Skewed Trip Walls
,”
ASME J. Turbomach.
,
116
(
4
), pp.
738
744
.10.1115/1.2929467
23.
Guidez
,
J.
,
1989
, “
Study of the Convective Heat Transfer in a Rotating Coolant Channel
,”
ASME J. Turbomach.
,
111
(
1
), pp.
43
50
.10.1115/1.3262235
24.
Dutta
,
S.
, and
Han
,
J. C.
,
1996
, “
Local Heat Transfer in Rotating Smooth and Ribbed Two-Pass Square Channels With Three Channel Orientations
,”
ASME J. Heat Transfer
,
118
(
3
), pp.
578
584
.10.1115/1.2822671
25.
Azad
,
G. S.
,
Uddin
,
M. J.
,
Han
,
J. C.
,
Moon
,
H. K.
,
Glezer
,
B.
,
2002
, “
Heat Transfer in a Two-Pass Rectangular Rotating Channel With 45-Deg Angled Rib Turbulators
,”
ASME J. Turbomach.
,
124
(
2
), pp.
251
259
.10.1115/1.1450569
26.
Fu
,
W.
,
Wright
,
L.
, and
Han
,
J.-C.
,
2006
, “
Rotational Buoyancy Effects on Heat Transfer in Five Different Aspect Ratio Rectangular Channels With Smooth Walls and 45 Degree Ribbed Walls
,”
ASME J. Heat Transfer
,
128
(
11
), pp.
1130
1141
.10.1115/1.2352782
27.
Liu
,
Y.
,
Huh
,
M.
,
Han
,
J.
, and
Chopra
,
S.
,
2008
, “
Heat Transfer in a Two-Pass Rectangular Channel (AR = 1:4) Under High Rotation Numbers
,”
ASME J. Heat Transfer
,
130
(
8
), p.
081701
.10.1115/1.2909615
28.
Huh
,
M.
,
Lei
,
J.
, and
Han
,
J.
,
2012
, “
Influence of Channel Orientation on Heat Transfer in a Two-Pass Smooth and Ribbed Rectangular Channel (AR = 2:1) Under Large Rotation Numbers
,”
ASME J. Turbomach.
,
134
(
1
), p.
011022
.10.1115/1.4003172
29.
Kline
,
S. J.
, and
McClintock
,
F. A.
,
1953
, “
Describing Uncertainty in Single-Sample Experiments
,”
ASME J. Mech. Eng.
,
75
(
1
), pp.
3
8
.
30.
Rallabandi
,
A. P.
,
Yang
,
H.
, and
Han
,
J. C.
,
2009
, “
Heat Transfer and Pressure Drop Measurements for a Square Channel With 45 Deg Ribs at High Reynolds Numbers
,”
ASME J. Heat Transfer
,
131
(
7
), p.
071701
.10.1115/1.3090818
31.
Mceligot
,
D.
, and
Jackson
,
J.
,
2004
, “
Deterioration Criteria for Convective Heat Transfer in Gas Flow Through Non-Circular Ducts
,”
Nucl. Eng. Des.
,
232
(
3
), pp.
327
333
.10.1016/j.nucengdes.2004.05.004
32.
Lee
,
J.
,
Hejzlar
,
P.
,
Saha
,
P.
,
Stahle
,
P.
,
Kazimi
,
M.
, and
Mceligot
,
D.
,
2008
, “
Deteriorated Turbulent Heat Transfer (DTHT) of Gas Up-Flow in a Circular Tube: Experimental Data
,”
Int. J. Heat Mass Transfer
,
51
(
13
), pp.
3259
3266
.10.1016/j.ijheatmasstransfer.2008.03.021
33.
Lei
,
J.
,
Li
,
S. J.
,
Han
J. C.
,
Zhang
,
L.
,
Moon
,
H. K.
,
2013
, “
Heat Transfer in Rotating Multi-Pass Rectangular Ribbed Channel With and Without a Turning Vane
,”
ASME J. Heat Transfer
,
135
(
4
), p.
041903
.10.1115/1.4023040
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