Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines

Abhishek Upadhyay; Michael Lengden; Godwin Enemali; George Stewart; Walter Johnstone; David Wilson; Gordon Humphries; Thomas Benoy; John Black; Andrea Chighine; Edward Fisher; Rui Zhang; Chang Liu; Nick Polydorides; Alex Tsekenis; Paul Wright; Joshua Kliment; Johan Nilsson; Yutong Feng; Victor Archilla; Javier  Rodríguez-Carmona; Jesús  Sánchez-Valdepeñas; Marta  Beltran; Valentin  Polo; Ian  Armstrong; Iain Mauchline; Douglas  Walsh; Mark  Johnson; Joanna  Bauldreay; Hugh McCann

doi:10.1364/AO.467828

Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines

Abhishek Upadhyay, Michael Lengden, Godwin Enemali, George Stewart, Walter Johnstone, David Wilson, Gordon Humphries, Thomas Benoy, John Black, Andrea Chighine, Edward Fisher, Rui Zhang, Chang Liu, Nick Polydorides, Alex Tsekenis, Paul Wright, Joshua Kliment, Johan Nilsson, Yutong Feng, Victor ArchillaJavier Rodríguez-Carmona, Jesús Sánchez-Valdepeñas, Marta Beltran, Valentin Polo, Ian Armstrong, Iain Mauchline, Douglas Walsh, Mark Johnson, Joanna Bauldreay, Hugh McCann

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We report here the first implementation of chemically specific imaging in the exhaust plume of a gas turbine typical of those used for propulsion in commercial aircraft. The method used is chemical species tomography (CST) and the target species is CO2, absorbing in the near-infrared at 1999.4 nm. A total of 126 beams propagate transverse to the plume axis, along 7 m paths in a coplanar geometry, to probe a central region of diameter ≈1.5m. The CO2 absorption spectrum is measured using tunable diode laser spectroscopy with wavelength modulation, using the second harmonic to first harmonic (2f/1f) ratio method. The engine is operated over the full range of thrust, while data are recorded in a quasi-simultaneous mode at frame rates of 1.25 and 0.3125 Hz. Various data inversion methodologies are considered and presented for image reconstruction. At all thrust levels a persistent ring structure of high CO2 concentration is observed in the central region of the measurement plane, with a raised region in the middle of the plume assumed to be due to the engine’s boat tail. With its potential to target various exhaust species, the CST method outlined here offers a new approach to turbine combustion research, turbine engine development, and aviation fuel research and development.

Original language	English
Pages (from-to)	8540
Number of pages	8552
Journal	Applied optics
Volume	61
Issue number	28
Early online date	29 Sept 2022
DOIs	https://doi.org/10.1364/AO.467828
Publication status	Published - 29 Nov 2022

Access to Document

10.1364/AO.467828Licence: Creative Commons: Attribution (CC-BY)

https://opg.optica.org/ao/fulltext.cfm?uri=ao-61-28-8540&id=507549Licence: Creative Commons: Attribution (CC-BY)

Combustion species Imaging Diagnostics for Aero-engine Research
Mccann, H. (Principal Investigator) & Polydorides, N. (Co-investigator)
EU government bodies
1/03/18 → 31/08/21
Project: Research
In-situ Chemical Measurement and Imaging Diagnostics for Energy Process Engineering
Mccann, H. (Principal Investigator), Jia, J. (Co-investigator), Linne, M. (Co-investigator), Peterson, B. (Co-investigator) & Polydorides, N. (Co-investigator)
EPSRC
1/10/16 → 30/09/21
Project: Research
TRANSFER: FLITES: Fibre-Laser Imaging of gas Turbine Exhaust Species
Mccann, H. (Principal Investigator)
EPSRC
1/03/13 → 28/02/17
Project: Research

Cite this

Upadhyay, A., Lengden, M., Enemali, G., Stewart, G., Johnstone, W., Wilson, D., Humphries, G., Benoy, T., Black, J., Chighine, A., Fisher, E., Zhang, R., Liu, C., Polydorides, N., Tsekenis, A., Wright, P., Kliment, J., Nilsson, J., Feng, Y., ... McCann, H. (2022). Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines. Applied optics, 61(28), 8540. https://doi.org/10.1364/AO.467828

@article{6688d5677a7b45339061ae00a16337f3,

title = "Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines",

abstract = "We report here the first implementation of chemically specific imaging in the exhaust plume of a gas turbine typical of those used for propulsion in commercial aircraft. The method used is chemical species tomography (CST) and the target species is CO2, absorbing in the near-infrared at 1999.4 nm. A total of 126 beams propagate transverse to the plume axis, along 7 m paths in a coplanar geometry, to probe a central region of diameter ≈1.5m. The CO2 absorption spectrum is measured using tunable diode laser spectroscopy with wavelength modulation, using the second harmonic to first harmonic (2f/1f) ratio method. The engine is operated over the full range of thrust, while data are recorded in a quasi-simultaneous mode at frame rates of 1.25 and 0.3125 Hz. Various data inversion methodologies are considered and presented for image reconstruction. At all thrust levels a persistent ring structure of high CO2 concentration is observed in the central region of the measurement plane, with a raised region in the middle of the plume assumed to be due to the engine{\textquoteright}s boat tail. With its potential to target various exhaust species, the CST method outlined here offers a new approach to turbine combustion research, turbine engine development, and aviation fuel research and development.",

author = "Abhishek Upadhyay and Michael Lengden and Godwin Enemali and George Stewart and Walter Johnstone and David Wilson and Gordon Humphries and Thomas Benoy and John Black and Andrea Chighine and Edward Fisher and Rui Zhang and Chang Liu and Nick Polydorides and Alex Tsekenis and Paul Wright and Joshua Kliment and Johan Nilsson and Yutong Feng and Victor Archilla and Javier Rodr{\'i}guez-Carmona and Jes{\'u}s S{\'a}nchez-Valdepe{\~n}as and Marta Beltran and Valentin Polo and Ian Armstrong and Iain Mauchline and Douglas Walsh and Mark Johnson and Joanna Bauldreay and Hugh McCann",

year = "2022",

month = nov,

day = "29",

doi = "10.1364/AO.467828",

language = "English",

volume = "61",

pages = "8540",

journal = "Applied optics",

issn = "1559-128X",

publisher = "Optica Publishing Group",

number = "28",

}

Upadhyay, A, Lengden, M, Enemali, G, Stewart, G, Johnstone, W, Wilson, D, Humphries, G, Benoy, T, Black, J, Chighine, A, Fisher, E, Zhang, R, Liu, C , Polydorides, N, Tsekenis, A, Wright, P, Kliment, J, Nilsson, J, Feng, Y, Archilla, V, Rodríguez-Carmona, J, Sánchez-Valdepeñas, J, Beltran, M, Polo, V, Armstrong, I, Mauchline, I, Walsh, D, Johnson, M, Bauldreay, J & McCann, H 2022, 'Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines', Applied optics, vol. 61, no. 28, pp. 8540. https://doi.org/10.1364/AO.467828

TY - JOUR

T1 - Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines

AU - Upadhyay, Abhishek

AU - Lengden, Michael

AU - Enemali, Godwin

AU - Stewart, George

AU - Johnstone, Walter

AU - Wilson, David

AU - Humphries, Gordon

AU - Benoy, Thomas

AU - Black, John

AU - Chighine, Andrea

AU - Fisher, Edward

AU - Zhang, Rui

AU - Liu, Chang

AU - Polydorides, Nick

AU - Tsekenis, Alex

AU - Wright, Paul

AU - Kliment, Joshua

AU - Nilsson, Johan

AU - Feng, Yutong

AU - Archilla, Victor

AU - Rodríguez-Carmona, Javier

AU - Sánchez-Valdepeñas, Jesús

AU - Beltran, Marta

AU - Polo, Valentin

AU - Armstrong, Ian

AU - Mauchline, Iain

AU - Walsh, Douglas

AU - Johnson, Mark

AU - Bauldreay, Joanna

AU - McCann, Hugh

PY - 2022/11/29

Y1 - 2022/11/29

N2 - We report here the first implementation of chemically specific imaging in the exhaust plume of a gas turbine typical of those used for propulsion in commercial aircraft. The method used is chemical species tomography (CST) and the target species is CO2, absorbing in the near-infrared at 1999.4 nm. A total of 126 beams propagate transverse to the plume axis, along 7 m paths in a coplanar geometry, to probe a central region of diameter ≈1.5m. The CO2 absorption spectrum is measured using tunable diode laser spectroscopy with wavelength modulation, using the second harmonic to first harmonic (2f/1f) ratio method. The engine is operated over the full range of thrust, while data are recorded in a quasi-simultaneous mode at frame rates of 1.25 and 0.3125 Hz. Various data inversion methodologies are considered and presented for image reconstruction. At all thrust levels a persistent ring structure of high CO2 concentration is observed in the central region of the measurement plane, with a raised region in the middle of the plume assumed to be due to the engine’s boat tail. With its potential to target various exhaust species, the CST method outlined here offers a new approach to turbine combustion research, turbine engine development, and aviation fuel research and development.

AB - We report here the first implementation of chemically specific imaging in the exhaust plume of a gas turbine typical of those used for propulsion in commercial aircraft. The method used is chemical species tomography (CST) and the target species is CO2, absorbing in the near-infrared at 1999.4 nm. A total of 126 beams propagate transverse to the plume axis, along 7 m paths in a coplanar geometry, to probe a central region of diameter ≈1.5m. The CO2 absorption spectrum is measured using tunable diode laser spectroscopy with wavelength modulation, using the second harmonic to first harmonic (2f/1f) ratio method. The engine is operated over the full range of thrust, while data are recorded in a quasi-simultaneous mode at frame rates of 1.25 and 0.3125 Hz. Various data inversion methodologies are considered and presented for image reconstruction. At all thrust levels a persistent ring structure of high CO2 concentration is observed in the central region of the measurement plane, with a raised region in the middle of the plume assumed to be due to the engine’s boat tail. With its potential to target various exhaust species, the CST method outlined here offers a new approach to turbine combustion research, turbine engine development, and aviation fuel research and development.

U2 - 10.1364/AO.467828

DO - 10.1364/AO.467828

M3 - Article

SN - 1559-128X

VL - 61

SP - 8540

JO - Applied optics

JF - Applied optics

IS - 28

ER -

Tomographic imaging of carbon dioxide in the exhaust plume of large commercial aero-engines

Abstract

Access to Document

Fingerprint

Projects

Combustion species Imaging Diagnostics for Aero-engine Research

In-situ Chemical Measurement and Imaging Diagnostics for Energy Process Engineering

TRANSFER: FLITES: Fibre-Laser Imaging of gas Turbine Exhaust Species

Cite this