RT Journal Article
T1 Temperature profile retrieval in axisymmetric combustion plumes using multilayer perceptron modeling and spectral feature selection in the infrared CO2 emission band
A1 García Cuesta, Esteban
A1 Castro González, Antonio Jesús de
A1 Galván, Inés M.
A1 López Martínez, Fernando
AB In this work, a methodology based on the combined use of a multilayer perceptron model fed using selected spectral information is presented to invert the radiative transfer equation (RTE) and to recover the spatial temperature profile inside an axisymmetric flame. The spectral information is provided by the measurement of the infrared CO2 emission band in the 3-5 mu m spectral region. A guided spectral feature selection was carried out using a joint criterion of principal component analysis and a priori physical knowledge of the radiative problem. After applying this guided feature selection, a subset of 17 wavenumbers was selected. The proposed methodology was applied over synthetic scenarios. Also, an experimental validation was carried out by measuring the spectral emission of the exhaust hot gas plume in a microjet engine with a Fourier transform-based spectroradiometer. Temperatures retrieved using the proposed methodology were compared with classical thermocouple measurements, showing a good agreement between them. Results obtained using the proposed methodology are very promising and can encourage the use of sensor systems based on the spectral measurement of the CO2 emission band in the 3-5 pm spectral window to monitor combustion processes in a nonintrusive way.
PB Sage Journals
SN 0003-7028
YR 2014
FD 2014-08-01
LK https://hdl.handle.net/10016/30759
UL https://hdl.handle.net/10016/30759
LA eng
NO The authors acknowledge the Spanish Ministry of Education for financial support under the project TRA2005-08892-C02-01.
DS e-Archivo
RD 1 sept. 2024