The combustor that is a 30% flat (rectangular) model of an annular turbojet-engine combustion chamber was studied. It gave a turbulent nonpremixed kerosene-air flame with equivalence ratios within the range of 0.15–0.75. Measurements of $CO2$ infrared radiation were performed on exhaust gases from a combustor. The infrared radiation images were obtained by an IR camera equipped with a narrow bandpass filter that falls on the $CO2$ fundamental band. Temperature profiles were measured by the thermocouple at the combustor outlet. The in-house program INFRAD was used to calculate infrared radiation from the $CO2$ component of the efflux gases from the combustor. The calculation was performed, taking into account the effects of radiation emission and absorption along an optical path. The calculations that allow prediction of “apparent” gas temperatures are those expected to be read by the IR camera. The calculated results are compared with experimental measurements. They are found to be in close agreement.

1.
Edwards
,
D. K.
, 1960, “
Absorption by Infrared Bands of Carbon Dioxide Gas at Elevated Pressures and Temperatures
,”
J. Opt. Soc. Am.
0030-3941,
50
, pp.
617
626
.
2.
Ludwig
,
C. B.
,
Malkmus
,
W.
,
Reardon
,
J. E.
, and
Thomson
,
J. A. L.
, 1973,
Handbook of Infrared Radiation from Combustion Gases
,
NASA SP-3080.
3.
Turns
,
S. R.
, 2000,
An Introduction to Combustion, Concept and Applications
, 2nd ed.,
McGraw-Hill Higher Education
, Boston.
4.
Baukal
,
C. E.
, 2001,
The John Zink Combustion Handbook
,
R.
Schwartz
, ed.,
CRC Press
, London.
5.
Avital
,
G.
,
Cohen
,
Y.
,
Gamss
,
L.
,
Kanelbaum
,
Y.
,
Macales
,
J.
,
Trieman
,
B.
,
Yaniv
,
S.
,
Lev
,
M.
,
Stricker
,
Y.
,
Sternlieb
,
A.
, 2001, “
Experimental and Computational Study of Infrared Emission from Underexpanded Rocket Exhaust Plumes
,”
J. Thermophys. Heat Transfer
0887-8722,
15
, pp.
377
383
.
6.
Jun
,
J. I.
,
Sivathanu
,
Y. R.
, and
Gore
,
J. P.
, 2000, “
Thermal Radiation Properties of Turbulent Lean Premixed Methane Air Flames
,” in
Proceedings of the Combustion Institute
, Vol.
28
,
pp.
391
398
.
7.
Kirby
,
B. J.
, and
Hanson
,
R. K.
, 2000, “
Imaging of CO and CO2 Using Infrared Planar Laser-Induced Fluorescence
,” in
Proceedings of the Combustion Institute
, Vol.
28
,
pp.
253
259
.
9.
,
D.
, and
Entwistle
,
A. G.
, 1961, “
Determination of the Emissivity, for Total Radiation, of Small Diameter Platinum-10% Rhodium Wires in the Temperature Range 600-1450°C
,”
Br. J. Appl. Phys.
0508-3443,
12
, pp.
708
711
.
10.
Young
,
S. J.
, 1977, “
Nonisothermal Band Model Theory
,”
0022-4073,
18
, pp.
1
28
.
11.
Young
,
S. J.
, 1977, “
Evaluation of Nonisothermal Band Model for H2O
,”