The determination of the heat release in technical flames is commonly done via bandpass filtered chemiluminescence measurements in the wavelength range of OH or CH radicals, which are supposed to be a measure for the heat release rate. However, these indirect heat release measurements are problematic because the measured intensities are the superposition of the desired radical emissions and contributions from the broadband emissions of CO2. Furthermore, the chemiluminescence intensities are strongly affected by the local air excess ratio of the flame and the turbulence intensity in the reaction zone. To investigate the influence of these effects on the applicability of chemiluminescence as a measure for the heat release rate in turbulent flames with mixture gradients, a reference method is used, which is based on the first law of thermodynamics. It is shown that although the integral heat release can be correlated with the integral chemiluminescence intensities, the heat release distribution is not properly represented by any signal from OH or CH. No reliable information about the spatially resolved heat release can be obtained from chemiluminescence measurements in flames with mixture gradients.

1.
Auer
,
M.
,
Gebauer
,
C.
,
Mösl
,
K.
,
Hirsch
,
C.
, and
Sattelmayer
,
T.
, 2005, “
Active Instability Control: Feedback of Combustion Instabilities on the Injection of Gaseous Fuel
,”
ASME J. Eng. Gas Turbines Power
0742-4795,
127
, pp.
748
754
.
2.
Auer
,
M.
,
Hirsch
,
C.
, and
Sattelmayer
,
T.
, 2005, “
Influence of the Interaction of Equivalence Ratio and Mass Flow Fluctuations on Flame Dynamics
,”
Proceedings of the ASME Turbo Expo
, Reno-Tahoe, NV.
3.
Freitag
,
E.
,
Konle
,
H.
,
Lauer
,
M.
,
Hirsch
,
C.
, and
Sattelmayer
,
T.
, 2006, “
Pressure Influence on the Flame Transfer Function of a Premixed Swirling Flame
,”
Proceedings of the ASME Turbo Expo
, Barcelona, Spain.
4.
Konle
,
M.
,
Kiesewetter
,
F.
, and
Sattelmayer
,
T.
, 2008, “
Simultaneous High Repetition Rate PIV-LIF-Measurements of CIVB Driven Flashback
,”
Exp. Fluids
0723-4864,
44
, pp.
529
538
.
5.
Wäsle
,
J.
,
Winkler
,
A.
, and
Sattelmayer
,
T.
, 2005, “
Spatial Coherence of the Heat Release Fluctuations in Turbulent Jet and Swirl Flames
,”
Flow, Turbul. Combust.
1386-6184,
75
, pp.
29
50
.
6.
Wäsle
,
J.
,
Winkler
,
A.
,
Lauer
,
M.
, and
Sattelmayer
,
T.
, 2007, “
Combustion Noise Modeling on Experimental Data Using Chemiluminescence as an Indicator for Heat Release Distribution
,”
Proceedings of the European Combustion Meeting
.
7.
Wäsle
,
J.
, 2007, “
Vorhersage der Lärmemission turbulenter Vormischflammen
,” Ph.D. thesis, TU München, Germany.
8.
Winkler
,
A.
, 2007, “
Validierung eines Modells zur Vorhersage turbulenten Verbrenungslärms
,” Ph.D. thesis, TU München, Germany.
9.
Balachandran
,
R.
,
Ayoola
,
B. O.
,
Kaminski
,
C. F.
,
Dowling
,
A. P.
, and
Mastorakos
,
E.
, 2005, “
Experimental Investigation of the Nonlinear Response of Turbulent Premixed Flames to Imposed Inlet Velocity Oscillations
,”
Combust. Flame
0010-2180,
143
, pp.
37
55
.
10.
Clark
,
T.
, and
Bittker
,
D.
, 1954, “
A Study of the Radiation From Laminar and Turbulent Open Propane-Air Flames as a Function of Flame Area, Equivalence Ratio, and Fuel Flow Rate
,” NACA Report No. RM E54F29.
11.
John
,
R.
, and
Summerfield
,
M.
, 1957, “
Effect of Turbulence on Radiation Intensity From Propane-Air Flames
,”
Jet Propul.
0095-8751,
27
, pp.
169
179
.
12.
Hurle
,
I. R.
,
Price
,
R. B.
,
Sugden
,
T. M.
, and
Thomas
,
A.
, 1968, “
Sound Emission From Open Turbulent Premixed Flames
,”
Proc. R. Soc. London, Ser. A
0950-1207,
303
, pp.
409
427
.
13.
Samaniego
,
J. -M.
,
Egolfopoulos
,
F.
, and
Bowman
,
C.
, 1995, “
CO2∗ Chemiluminescence in Premixed Flames
,”
Combust. Sci. Technol.
0010-2202,
109
, pp.
183
203
.
14.
Haber
,
L.
,
Vandsburger
,
U.
,
Saunders
,
W.
, and
Khanna
,
V.
, 2000, “
An Experimental Examination of the Relationship Between Chemiluminescent Light Emissions and Heat-Release Rate Under Non-Adiabatic Conditions
,”
RTO AVT Symposium on Active Control Technology for Enhanced Performance Operational Capabilities of Military Aircraft, Land Vehicles and Sea Vehichles
, Braunschweig, Germany, 8–11 May, published in RTO MP-051.
15.
Lee
,
J.
, and
Santavicca
,
D.
, 2003, “
Experimental Diagnostics for the Study of Combustion Instabilities in Lean Premixed Combustors
,”
J. Propul. Power
0748-4658,
19
(
5
), pp.
735
750
.
16.
Najm
,
H.
,
Paul
,
P.
,
Mueller
,
C.
, and
Wyckoff
,
P.
, 1998, “
On the Adequacy of Certain Experimental Observables as Measurements of Flame Burning Rate
,”
Combust. Flame
0010-2180,
113
, pp.
312
332
.
17.
Fanaca
,
D.
,
Alemela
,
P.
,
Ettner
,
F.
,
Hirsch
,
C.
,
Sattelmayer
,
T.
, and
Schuermans
,
B.
, 2008, “
Determination and Comparison of the Dynamic Characteristics of a Perfectly Premixed Flame in Both Single and Annular Combustion Chambers
,”
Proceedings of the ASME Turbo Expo
, Berlin, Germany.
18.
Ayoola
,
B
.,
Balachandran
,
R.
,
Frank
,
J.
,
Mastorakos
,
E.
, and
Kaminski
,
C.
, 2006, “
Spatially Resolved Heat Release Rate Measurements in Turbulent Premixed Flames
,”
Combust. Flame
0010-2180,
144
, pp.
1
16
.
19.
Wäsle
,
J.
,
Winkler
,
A.
,
Rössle
,
E.
, and
Sattelmayer
,
T.
, 2006, “
Development of an Annular Porous Burner for the Investigation of Adiabatic Unconfined Flames
,”
Proceedings of the 13th International Symposium on the Application of Laser Techniques to Fluid Mechanics
.
20.
Lauer
,
M.
, and
Sattelmayer
,
T.
, 2007, “
Luftzahlmessung in einer turbulenten Drallflamme auf Basis spektral aufgelöster Chemilumineszenz
,”
VDI-Ber.
0083-5560,
1988
, pp.
735
741
.
21.
Lauer
,
M.
, and
Sattelmayer
,
T.
, 2008, “
Heat Release Calculation in a Turbulent Swirl Flame From Laser and Chemiluminescence Measurements
,”
Proceedings of the 14th International Symposium on Applications of Laser Techniques to Fluid Mechanics
.
22.
Haber
,
L.
, 2000, “
An Investigation Into the Origin, Measurement and Application of Chemiluminescent Light Emissions From Premixed Flames
,” MS thesis, Virginia Polytechnic Institute and State University, Blacksburg, VA.
23.
Hardalupas
,
Y.
, and
Orain
,
M.
, 2004, “
Local Measurements of the Time-Dependent Heat Release Rate and Equivalence Ratio Using Chemiluminescent Emission From a Flame
,”
Combust. Flame
0010-2180,
139
, pp.
188
207
.
24.
Ikeda
,
Y.
,
Nishiyama
,
A.
,
Kim
,
S. M.
,
Kawahara
,
N.
, and
Tomita
,
E.
, 2006, “
Anchor Point Structure Measurements for Laminar Propane/Air and Methane/Air Premixed Flames Using Local Chemiluminescence Spectra
,”
Proceedings of the 31st International Symposium on Combustion
.
25.
Nori
,
V.
, and
Seitzman
,
J.
, 2007, “
Chemiluminescence Measurements and Modeling in Syngas, Methane and Jet-A Fueled Combustors
,”
Proceedings of the AIAA
.
26.
Hoffmann
,
A.
, 2004, “
Modellierung turbulenter Vormischverbrennung
,” Ph.D. thesis, Universität Karlsruhe (TH), Germany.
27.
Dribinski
,
V.
,
Ossadtchi
,
A.
,
Mandelshtam
,
V. A.
, and
Reisler
,
H.
, 2002, “
Reconstruction of Abel-Transformable Images: The Gaussian Basis-Set Expansion Abel Transform Method
,”
Rev. Sci. Instrum.
0034-6748,
73
, pp.
2634
2642
.
28.
Eckbreth
,
A. C.
, 1996,
Laser Diagnostics for Combustion Temperature and Species
,
2nd ed.
,
W. A.
Sirignano
, ed.,
Gordon and Breach
,
The Netherlands
.
You do not currently have access to this content.