Temperature, Oxygen, and Soot-Volume-Fraction Measurements in a Turbulent C₂H₄-Fueled Jet Flame

Technical Report · Tue Sep 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1221520· OSTI ID:1221520

Kearney, Sean P. ^[1]; Guildenbecher, Daniel Robert ^[1]; Winters, Caroline ^[1]; Farias, Paul Abraham ^[1]; Grasser, Thomas W. ^[1]; Hewson, John C. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We present a detailed set of measurements from a piloted, sooting, turbulent C ₂ H ₄ - fueled diffusion flame. Hybrid femtosecond/picosecond coherent anti-Stokes Raman scattering (CARS) is used to monitor temperature and oxygen, while laser-induced incandescence (LII) is applied for imaging of the soot volume fraction in the challenging jet-flame environment at Reynolds number, Re = 20,000. Single-laser shot results are used to map the mean and rms statistics, as well as probability densities. LII data from the soot-growth region of the flame are used to benchmark the soot source term for one-dimensional turbulence (ODT) modeling of this turbulent flame. The ODT code is then used to predict temperature and oxygen fluctuations higher in the soot oxidation region higher in the flame.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Science (NA-113)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1221520
• Report Number(s): SAND2015-7968; 603860
• Country of Publication: United States
• Language: English