This paper numerically investigates the interaction between multiple can combustors and the first vane in an industrial gas turbine with 16 can combustors and 32 vanes in order to find ways of reducing the overall cooling requirements. Two promising concepts for the overall cooling reduction are presented. In the first, by minimizing the axial distance between the combustor wall and the vane, the stagnation region at the leading edge (LE) of every second vane can be effectively shielded from the hot mainstream gases. The LE shielding allows continuous cooling slots to be used (as an alternative to discrete cooling holes) to cool the downstream parts of the vane using a portion of the saved LE showerhead cooling air. The second concept proposes a full combustor and first vane integration. In this novel concept the number of vanes is halved and the combustor walls are used to assist the flow turning. All remaining vanes are fully integrated into the combustor walls. In this way the total wetted area of the integrated system is reduced, and by shielding the LEs of the remaining vanes the total amount of cooling air can be reduced. The proposed combustor and first vane integration does not detrimentally affect the aerodynamics of the combustor and vane system. The concept also simplifies the design and should lower the manufacturing costs.

1.
Horlock
,
J. H.
,
Watson
,
D. T.
, and
Jones
,
T. V.
, 2001, “
Limitations on Gas Turbine Performance Imposed by Large Turbine Cooling Flows
,”
ASME J. Eng. Gas Turbines Power
0742-4795,
123
, pp.
487
494
.
2.
Han
,
J.
,
Dutta
,
S.
, and
Ekkad
,
S. V.
, 2000,
Gas Turbine Heat Transfer and Cooling Technology
,
Taylor & Francis
,
New York
.
3.
Bogard
,
D. G.
, and
Thole
,
K. A.
, 2006, “
Gas Turbine Film Cooling
,”
J. Propul. Power
0748-4658,
22
(
2
), pp.
249
270
.
4.
Arts
,
T.
, 2001, “
Film Cooling: What Did We Learn From Our Measurements?
,”
Ann. N.Y. Acad. Sci.
0077-8923,
934
, pp.
126
134
.
5.
Lynch
,
S. P.
, and
Thole
,
K. A.
, 2007, “
The Effect of Combustor-Turbine Interface Gap Leakage on the Endwall Heat Transfer for a Nozzle Guide Vane
,”
ASME
Paper No. GT2007-27867.
6.
Blair
,
M. F.
, 1974, “
An Experimental Study of Heat Transfer and Film Cooling on Large-Scale Turbine Endwalls
,”
ASME J. Heat Transfer
0022-1481,
96
, pp.
524
529
.
7.
Hartnett
,
J. P.
,
Birkebak
,
R. C.
, and
Eckert
,
E. R. G.
, 1961, “
Velocity Distributions, Temperature Distributions, Effectiveness and Heat Transfer for Air Injected Through a Tangential Slot Into a Turbulent Boundary Layer
,”
ASME J. Heat Transfer
0022-1481,
83
, pp.
293
306
.
8.
Bunker
,
R. S.
, 2009, “
A Study of Mesh-Fed Slot Film Cooling
,”
ASME
Paper No. GT2009-59338.
9.
Shultz
,
A.
, 2001, “
Combustor Liner Cooling Technology in Scope of Reduced Pollutant Formation and Rising Thermal Efficiencies
,”
Ann. N.Y. Acad. Sci.
0077-8923,
934
, pp.
135
146
.
10.
Butler
,
T. L.
,
Sharma
,
O. P.
,
Joslyn
,
H. D.
, and
Dring
,
R. P.
, 1989, “
Redistribution of an Inlet Temperature Distortion in an Axial Flow Turbine Stage
,”
J. Propul. Power
0748-4658,
5
, pp.
64
71
.
11.
Rai
,
M. M.
, and
Dring
,
R. P.
, 1990, “
Navier–Stokes Analysis of the Redistribution of Inlet Temperature Distortions in a Turbine
,”
J. Propul. Power
0748-4658,
6
, pp.
276
282
.
12.
Krouthen
,
B.
, and
Giles
,
M. B.
, 1988, “
Numerical Investigation of Hot Streaks in Turbines
,” AIAA Paper No. 88-3015.
13.
Turrell
,
M. D.
,
Stopford
,
P. J.
,
Syed
,
K. J.
, and
Buchanan
,
E.
, 2004, “
CFD Simulation of the Flow Within and Downstream of a High Swirl Lean Premixed Gas Turbine Combustor
,”
ASME
Paper No. Gt2004-53112.
14.
Rosic
,
B.
, and
Klostermeier
,
C.
, 2009, “
Combustor Wall and the First Vane Leading Edge Film Cooling Interaction in an Industrial Gas Turbine
,”
14th International Conference on Fluid Flow Technologies, CMFF-09
, Budapest, Hungary.
15.
Mitsubishi Heavy Industries, Ltd.
, “
Mitsubishi Gas Turbine M501F/M701F
,” Product brochure.
16.
Cruse
,
M. W.
,
Yuki
,
U. M.
, and
Bogard
,
D. G.
, 1997, “
Investigation of Various Parametric Influences on Leading Edge Film Cooling
,”
ASME
Paper No. 97-GT-296.
17.
Klostermeier
,
C.
, 2008, “
Investigation into the Capability of Large Eddy Simulations for Turbomachinery Design
,” Ph.D. thesis, Department of Engineering, Cambridge University, Cambridge.
18.
Piomelli
,
U.
, and
Chasnow
,
J. R.
, 1996, “
Large-Eddy Simulations: Theory and Applications
,”
Transition and Turbulence Modelling
,
D.
Henningson
,
M.
Hallbaeck
,
H.
Alfreddson
, and
A.
Johansson
, eds.,
Kluwer
,
Dordrecht
, pp.
269
333
.
You do not currently have access to this content.