High-speed thermometry in reacting flows using hybrid fs/ps CARS

Hans U. Stauffer; Joseph D. Miller; Mikhail N. Slipchenko; Terrence R. Meyer; James R. Gord

doi:10.2514/6.2010-4804

High-speed thermometry in reacting flows using hybrid fs/ps CARS

Hans U. Stauffer
, Joseph D. Miller
, Mikhail N. Slipchenko
, Terrence R. Meyer
, James R. Gord

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Hybrid femtosecond/picosecond (fs/ps) coherent anti-Stokes Raman scattering (CARS) is demonstrated for high-speed thermometry in unsteady high-temperature flames, including successful comparisons with a time- and frequency-resolved theoretical model. After excitation of the N₂ vibrational manifold with 100-fs broadband pump and Stokes beams, the Raman coherence is probed using a frequency-narrowed 2.5-ps probe beam that is time delayed to suppress nonresonant background by two orders of magnitude. Experimental spectra were obtained at 500 Hz in steady and pulsed H₂-air flames and exhibit a temperature precision of 2.2% and an accuracy of 3.3% up to 2400 K. Strategies for real-time gas-phase thermometry in high-temperature flames are also discussed, along with implications for kHz-rate measurements in practical combustion systems.

Original language	English (US)
Title of host publication	27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010
Publisher	American Institute of Aeronautics and Astronautics Inc.
ISBN (Print)	9781617389276
DOIs	https://doi.org/10.2514/6.2010-4804
State	Published - 2010
Externally published	Yes

Publication series

Name	27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010
Volume	1

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10.2514/6.2010-4804

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Stauffer, H. U., Miller, J. D., Slipchenko, M. N., Meyer, T. R., & Gord, J. R. (2010). High-speed thermometry in reacting flows using hybrid fs/ps CARS. In 27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010 Article 2010-4804 (27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010; Vol. 1). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2010-4804

High-speed thermometry in reacting flows using hybrid fs/ps CARS. / Stauffer, Hans U.; Miller, Joseph D.; Slipchenko, Mikhail N. et al.
27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010. American Institute of Aeronautics and Astronautics Inc., 2010. 2010-4804 (27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Stauffer, HU, Miller, JD, Slipchenko, MN, Meyer, TR & Gord, JR 2010, High-speed thermometry in reacting flows using hybrid fs/ps CARS. in 27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010., 2010-4804, 27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010, vol. 1, American Institute of Aeronautics and Astronautics Inc. https://doi.org/10.2514/6.2010-4804

Stauffer HU, Miller JD, Slipchenko MN, Meyer TR, Gord JR. High-speed thermometry in reacting flows using hybrid fs/ps CARS. In 27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010. American Institute of Aeronautics and Astronautics Inc. 2010. 2010-4804. (27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010). doi: 10.2514/6.2010-4804

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title = "High-speed thermometry in reacting flows using hybrid fs/ps CARS",

abstract = "Hybrid femtosecond/picosecond (fs/ps) coherent anti-Stokes Raman scattering (CARS) is demonstrated for high-speed thermometry in unsteady high-temperature flames, including successful comparisons with a time- and frequency-resolved theoretical model. After excitation of the N2 vibrational manifold with 100-fs broadband pump and Stokes beams, the Raman coherence is probed using a frequency-narrowed 2.5-ps probe beam that is time delayed to suppress nonresonant background by two orders of magnitude. Experimental spectra were obtained at 500 Hz in steady and pulsed H2-air flames and exhibit a temperature precision of 2.2\% and an accuracy of 3.3\% up to 2400 K. Strategies for real-time gas-phase thermometry in high-temperature flames are also discussed, along with implications for kHz-rate measurements in practical combustion systems.",

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doi = "10.2514/6.2010-4804",

language = "English (US)",

isbn = "9781617389276",

series = "27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010",

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T1 - High-speed thermometry in reacting flows using hybrid fs/ps CARS

AU - Stauffer, Hans U.

AU - Miller, Joseph D.

AU - Slipchenko, Mikhail N.

AU - Meyer, Terrence R.

AU - Gord, James R.

PY - 2010

Y1 - 2010

N2 - Hybrid femtosecond/picosecond (fs/ps) coherent anti-Stokes Raman scattering (CARS) is demonstrated for high-speed thermometry in unsteady high-temperature flames, including successful comparisons with a time- and frequency-resolved theoretical model. After excitation of the N2 vibrational manifold with 100-fs broadband pump and Stokes beams, the Raman coherence is probed using a frequency-narrowed 2.5-ps probe beam that is time delayed to suppress nonresonant background by two orders of magnitude. Experimental spectra were obtained at 500 Hz in steady and pulsed H2-air flames and exhibit a temperature precision of 2.2% and an accuracy of 3.3% up to 2400 K. Strategies for real-time gas-phase thermometry in high-temperature flames are also discussed, along with implications for kHz-rate measurements in practical combustion systems.

AB - Hybrid femtosecond/picosecond (fs/ps) coherent anti-Stokes Raman scattering (CARS) is demonstrated for high-speed thermometry in unsteady high-temperature flames, including successful comparisons with a time- and frequency-resolved theoretical model. After excitation of the N2 vibrational manifold with 100-fs broadband pump and Stokes beams, the Raman coherence is probed using a frequency-narrowed 2.5-ps probe beam that is time delayed to suppress nonresonant background by two orders of magnitude. Experimental spectra were obtained at 500 Hz in steady and pulsed H2-air flames and exhibit a temperature precision of 2.2% and an accuracy of 3.3% up to 2400 K. Strategies for real-time gas-phase thermometry in high-temperature flames are also discussed, along with implications for kHz-rate measurements in practical combustion systems.

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UR - https://www.scopus.com/pages/publications/84877719086#tab=citedBy

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DO - 10.2514/6.2010-4804

M3 - Conference contribution

AN - SCOPUS:84877719086

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T3 - 27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010

BT - 27th AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2010

PB - American Institute of Aeronautics and Astronautics Inc.

ER -

High-speed thermometry in reacting flows using hybrid fs/ps CARS

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