The concept of the novel short helical combustor (SHC) was investigated in our previous work (Ariatabar et al., 2016, “Short Helical Combustor: Concept Study of an Innovative Gas Turbine Combustor With Angular Air Supply,” ASME J. Eng. Gas Turbines Power, 138(3), p. 031503 and Ariatabar et al., 2017, “Short Helical Combustor: Dynamic Flow Analysis in a Combustion System With Angular Air Supply,” ASME J. Eng. Gas Turbines Power, 139(4), p. 041505). Based on the insight gained from these previous investigations, we propose a generic design improvement to address the tremendous loss of initial angular momentum as well as inhomogeneous flow and temperature field at the outlet of the SHC. In the present paper, the main features of this design are introduced. It is shown that a three-dimensional shaping of the sidewalls, the dome, and the liners can effectively counteract the suboptimal interaction of the swirl flames with these surrounding walls. As a result, the flow at the outlet of the combustor features a high angular momentum and exhibits a uniform flow angle and temperature field. The insight gained from these generic investigations, and the resulting design optimization provides a useful framework for further industrial optimization of the SHC.

References

References
1.
Ariatabar
,
B.
,
Koch
,
R.
,
Bauer
,
H.-J.
, and
Negulescu
,
D.-A.
,
2015
, “
Short Helical Combustor: Concept Study of an Innovative Gas Turbine Combustor With Angular Air Supply
,”
ASME J. Eng. Gas Turbines Power
,
138
(
3
), p.
031503
.
2.
Ariatabar
,
B.
,
Koch
,
R.
, and
Bauer
,
H.-J.
,
2016
, “
Short Helical Combustor: Dynamic Flow Analysis in a Combustion System With Angular Air Supply
,”
ASME J. Eng. Gas Turbines Power
,
139
(
4
), p.
041505
.
3.
Schmid
,
H.-P.
,
Habisreuther
,
P.
, and
Leuckel
,
W.
,
1998
, “
A Model for Calculating Heat Release in Premixed Turbulent Flames
,”
Combust. Flame
,
113
(1–2), pp.
79
91
.
4.
Yakhot
,
V.
,
Orszag
,
S. A.
,
Thangam
,
S.
,
Gatski
,
T. B.
, and
Speziale
,
C. G.
,
1992
, “
Development of Turbulence Models for Shear Flows by a Double Expansion Technique
,”
Phys. Fluids
,
4
(
7
), pp.
1510
1520
.
5.
Bärow
,
E.
,
Koch
,
R.
, and
Bauer
,
H.-J.
,
2013
, “
Comparison of Oscillation Modes of Spray and Gaseous Flames
,”
Eighth Mediterranean Combustion Symposium
, Izmir, Turkey, Sept. 8–13.
6.
Gepperth
,
S.
,
Bärow
,
E.
,
Koch
,
R.
, and
Bauer
,
H.-J.
,
2014
, “
Primary Atomization of Prefilming Airblast Nozzles: Experimental Studies Using Advanced Image Processing Techniques
,”
26th Annual Conference on Liquid Atomization and Spray Systems
(ILASS), Bremen, Germany, Sept. 8–10, pp. 8–10.
7.
Pianko
,
M.
, and
Wazelt
,
F.
,
1983
, “
Propulsion and Energetics Panel Working Group 14 on Suitable Averaging Techniques in Non-Uniform Internal Flows
,” Advisory Group for Aerospace Research and Development, Neuilly-sur-Seine, France, AGARD Advisory Report No.
182
.https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwj9pMav0sfWAhUFYiYKHSB_BdAQFgglMAA&url=https%3A%2F%2Fwww.sto.nato.int%2Fpublications%2FAGARD%2FAGARD-AR-182%2FAGARD-AR-182.pdf&usg=AFQjCNGD0eqBpKmEN0ONVBW6cHqqej-mBQ
8.
Cumpsty
,
N. A.
, and
Horlock
,
J. H.
,
2006
, “
Averaging Nonuniform Flow for a Purpose
,”
ASME J. Turbomach.
,
128
(
1
), pp.
120
129
.
You do not currently have access to this content.