Abstract
In this paper, the film-cooling effectiveness (η) and heat transfer coefficient (h) of different film hole geometries are investigated, including double-jet film cooling (DJFC) holes, streamwise cylindrical holes, and fan-shaped holes, both experimentally and numerically. Results reveal that when the blowing ratio is less than 1.0, the DJFC holes have the highest η and the highest h, as well as the highest net heat flux reduction (NHFR). However, a higher blowing ratio (>1.0) leads to a quickly decreasing NHFR of DJFC holes. The asymmetric antikidney vortex and the high turbulent kinetic energy (TKE) are dominant in the performance of the DJFC holes. Owing to medium effectiveness and the lowest heat transfer coefficient, the fan-shaped holes possess the highest net heat flux reduction at M = 2.0 although the value is negative. The relatively weak kidney vortex and the low TKE can explain the phenomena. The cylindrical holes have the lowest η and the lowest NHFR due to the kidney vortex and relatively higher TKE.
References
1.
Han
,
J. C.
,
Dutta
,
S.
, and
Ekkad
,
S.
, 2012
, Gas Turbine Heat Transfer and Cooling Technology
,
CRC Press
, Boca Raton, FL
.2.
Walters
,
D. K.
, and
Leylek
,
J. H.
, 2000
, “
A Detailed Analysis of Film-Cooling Physics: Part I-Streamwise Injection With Cylindrical Holes
,” ASME J. Turbomach.
,
122
(1
), pp. 102
–112
.10.1115/1.5554333.
Goldstein
,
R. J.
,
Eckert
,
E. R. G.
,
Eriksen
,
V. L.
, and
Ramsey
,
J. W.
, 1970
, “
Film Cooling Following Injection Through Inclined Circular Tubes
,” Isr. J. Technol.
,
8
(1–2
), pp. 145
–154
.https://ntrs.nasa.gov/api/citations/19700009085/downloads/19700009085.pdf4.
Sinha
,
A. K.
,
Bogard
,
D. G.
, and
Crawford
,
M. E.
, 1991
, “
Film-Cooling Effectiveness Downstream of a Single Row of Holes With Variable Density Ratio
,” ASME J. Turbomach.
,
113
(3
), pp. 442
–449
.10.1115/1.29278945.
Forth
,
C. J. P.
,
Loftus
,
P. J.
, and
Jones
,
T. V.
, 1985
, “
The Effect of Density Ratio on the Film-Cooling of a Flat Plate
,” AGARD Heat Transfer and Cooling in Gas Turbines
, Antalya, Turkey, Oct. 12–16, p. 12
.6.
Leylek
,
J. H.
, and
Zerkle
,
R. D.
, 1994
, “
Discrete-Jet Film Cooling: A Comparison of Computational Results With Experiments
,” ASME J. Turbomach.
,
116
(3
), pp. 358
–368
.10.1115/1.29294227.
Schmidt
,
D. L.
,
Sen
,
B.
, and
Bogard
,
D. G.
, 1996
, “
Film Cooling With Compound Angle Holes: Adiabatic Effectiveness
,” ASME J. Turbomach.
,
118
(4
), pp. 807
–813
.10.1115/1.28409388.
Goldstein
,
R. J.
, and
Jin
,
P.
, 2001
, “
Film Cooling Downstream of a Row of Discrete Holes With Compound Angle
,” ASME J. Turbomach.
,
123
(2
), pp. 222
–230
.10.1115/1.13449059.
McGovern
,
K. T.
, and
Leylek
,
J. H.
, 2000
, “
A Detailed Analysis of Film Cooling Physics: Part II—Compound-Angle Injection With Cylindrical Holes
,” ASME J. Turbomach.
,
122
(1
), pp. 113
–121
.10.1115/1.55543410.
Ahn
,
J.
,
Jung
,
I. S.
, and
Lee
,
J. S.
, 2003
, “
Film Cooling From Two Rows of Holes With Opposite Orientation Angles: Injectant Behavior and Adiabatic Film Cooling Effectiveness
,” Int. J. Heat Fluid Flow
,
24
(1
), pp. 91
–99
.10.1016/S0142-727X(02)00200-X11.
Sen
,
B.
,
Schmidt
,
D. L.
, and
Bogard
,
D. G.
, 1996
, “
Film Cooling With Compound Angle Holes: Heat Transfer
,” ASME J. Turbomach.
,
118
(4
), pp. 800
–806
.10.1115/1.284093712.
Porter
,
J. S.
, 2008
, “
A Comparative Investigation of Round and Fan-Shaped Cooling Hole Near Flow Fields
,” ASME J. Turbomach.
,
130
(4
), p. 041020
.10.1115/1.281295213.
Shi
,
W.
,
Li
,
X.
,
Wang
,
L.
,
Ren
,
J.
, and
Jiang
,
H.
, 2020
, “
Large Eddy Simulation of Film Cooling for the Real Additive Manufactured Fan-Shaped Holes
,” ASME
Paper No. GT2020-14852. 10.1115/GT2020-1485214.
Yu
,
Y.
,
Yen
,
C.-H.
,
Shih
,
T. I.-P.
,
Chyu
,
M. K.
, and
Gogineni
,
S.
, 2002
, “
Film Cooling Effectiveness and Heat Transfer Coefficient Distributions Around Diffusion Shaped Holes
,” ASME J. Heat Mass Transfer-Trans. ASME
,
124
(5
), pp. 820
–827
.10.1115/1.141836715.
Kusterer
,
K.
,
Bohn
,
D.
,
Sugimoto
,
T.
, and
Tanaka
,
R.
, 2007
, “
Double-Jet Ejection of Cooling Air for Improved Film Cooling
,” ASME J. Turbomach.
,
129
(4
), pp. 809
–815
.10.1115/1.272050816.
Kusterer
,
K.
,
Elyas
,
A.
,
Bohn
,
D.
,
Sugimoto
,
T.
, and
Tanaka
,
R.
, 2008
, “
Double-Jet Film-Cooling for Highly Efficient Film-Cooling With Low Blowing Ratios
,” ASME
Paper No. GT2008-50073. 10.1115/GT2008-5007317.
Kusterer
,
K.
,
Elyas
,
A.
,
Bohn
,
D.
,
Sugimoto
,
T.
,
Tanaka
,
R.
, and
Kazari
,
M.
, 2009
, “
A Parametric Study on the Influence of the Lateral Ejection Angle of Double-Jet Holes on the Film Cooling Effectiveness for High Blowing Ratios
,” ASME
Paper No. GT2009-59321. 10.1115/GT2009-5932118.
Yao
,
J.
,
Xu
,
J.
,
Zhang
,
K.
,
Lei
,
J.
, and
Wright
,
L. M.
, 2019
, “
Effect of Density Ratio on Film-Cooling Effectiveness Distribution and Its Uniformity for Several Hole Geometries on a Flat Plate
,” ASME J. Turbomach.
,
141
(5
), p. 051008
.10.1115/1.404181019.
Wang
,
Z.
,
Liu
,
J. J.
,
An
,
B. T.
, and
Zhang
,
C.
, “
Effects of Axial Row-Spacing for Double-Jet Film-Cooling on the Cooling Effectiveness
,” ASME
Paper No. GT2011-4605. 10.1115/GT2011-460520.
Yao
,
J.
,
Zhang
,
K.
,
Wu
,
J.
,
Lei
,
J.
,
Fang
,
Y.
, and
Wright
,
L. M.
, 2019
, “
An Experimental Investigation on Streamwise Distance and Density Ratio Effects on Double-Jet Film-Cooling
,” Appl. Therm. Eng.
,
156
, pp. 410
–421
.10.1016/j.applthermaleng.2019.04.08121.
He
,
J.
,
Yao
,
J.
,
Yang
,
X.
,
Zhang
,
K.
,
Lei
,
J.
, and
Xie
,
G.
, 2023
, “
Investigation on Overall Performance of Double-Jet Film Cooling Holes With Various Spanwise Distance
,” Int. J. Therm. Sci.
,
183
, p. 107841
.10.1016/j.ijthermalsci.2022.10784122.
Cho
,
M. Y.
,
Seo
,
H. S.
, and
Kim
,
Y. J.
, 2014
, “
Effect of Hole Pitch Ratio and Compound Angle on the Thermal Flow Fields of Double-Jet Film Cooling Hole
,” ASME
Paper No. FEDSM2014-21479. 10.1115/FEDSM2014-2147923.
He
,
J.
,
Yao
,
J.
,
Yang
,
X.
,
Duan
,
J.
,
Lei
,
J.
, and
Xie
,
G.
, 2020
, “
Effects of Mainstream Attack Angles on Film-Cooling Effectiveness of Double-Jet Film-Cooling
,” Int. J. Therm. Sci.
,
149
, p. 106183
.10.1016/j.ijthermalsci.2019.10618324.
Yao
,
J.
,
Su
,
P.
,
He
,
J.
,
Wu
,
J.
,
Lei
,
J.
, and
Fang
,
Y.
, 2020
, “
Experimental and Numerical Investigations on Double-Jet Film-Cooling With Different Mainstream Incidence Angles
,” Appl. Therm. Eng.
,
166
, p. 114737
.10.1016/j.applthermaleng.2019.11473725.
Liao
,
G.
,
Wang
,
X.
,
Li
,
J.
, and
Zhang
,
F.
, 2014
, “
Effects of Curvature on the Film Cooling Effectiveness of Double-Jet Film Cooling
,” ASME
Paper No. GT2014-26263.10.1115/GT2014-2626326.
Kusterer
,
K.
,
Elyas
,
A.
,
Bohn
,
D.
,
Sugimoto
,
T.
,
Tanaka
,
R.
, and
Kazari
,
M.
, 2010
, “
Film Cooling Effectiveness Comparison Between Shaped-and Double Jet Film Cooling Holes in a Row Arrangement
,” ASME
Paper No. GT2010-22604. 10.1115/GT2010-2260427.
Gritsch
,
M.
,
Schulz
,
A.
, and
Wittig
,
S.
, 2000
, “
Film-Cooling Holes With Expanded Exits: Near-Hole Heat Transfer Coefficients
,” Int. J. Heat Fluid Flow
,
21
(2
), pp. 146
–155
.10.1016/S0142-727X(99)00076-428.
Chambers
,
A. C.
,
Gillespie
,
D. R. H.
,
Ireland
,
P. T.
, and
Dailey
,
G. M.
, 2003
, “
A Novel Transient Liquid Crystal Technique to Determine Heat Transfer Coefficient Distributions and Adiabatic Wall Temperature in a Three-Temperature Problem
,” ASME J. Turbomach.
,
125
(3
), pp. 538
–546
.10.1115/1.157525229.
Liu
,
C.-L.
,
Zhu
,
H.-R.
,
Bai
,
J.-T.
, and
Xu
,
D.-C.
, 2009
, “
Experimental Research on the Thermal Performance of Converging Slot Holes With Different Divergence Angles
,” Exp. Therm. Fluid Sci.
,
33
(5
), pp. 808
–817
.10.1016/j.expthermflusci.2009.02.01030.
Kline
,
S. J.
, and
McClintock
,
F.
, 1953
, “
Describing Uncertainties in Single-Sample Experiments
,” Mech. Eng.
,
75
(1
), pp. 3
–8
.http://54.243.252.9/engr-1330-webroot/6-Projects/PInstrumentCalibration/Kline_McClintock1953.pdf31.
Hunt
,
J. C. R.
,
Wray
,
A. A.
, and
Moin
,
P.
, 1988
, “
Eddies, Stream, and Convergence Zones in Turbulent Flow
,”
Center for Turbulence Research
, Report No. N89-24555.32.
Zhou
,
W.
,
Peng
,
D.
,
Liu
,
Y.
, and
Hu
,
H.
, 2019
, “
Assessment of Film Cooling's Surface Quantities Using Pressure-and Temperature-Sensitive Paint: Comparisons Between Shaped and Sand-Dune Inspired Holes
,” Exp. Therm. Fluid Sci.
,
101
, pp. 16
–26
.10.1016/j.expthermflusci.2018.10.005Copyright © 2023 by ASME
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