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Single-Shot Scalar-Triplet Measurements in High-Pressure Swirl-Stabilized Flames for Combustion Code ValidationIn support of NASA ARMD's code validation project, we have made significant progress by providing the first quantitative single-shot multi-scalar data from a turbulent elevated-pressure (5 atm), swirl-stabilized, lean direct injection (LDI) type research burner operating on CH4-air using a spatially-resolved pulsed-laser spontaneous Raman diagnostic technique. The Raman diagnostics apparatus and data analysis that we present here were developed over the past 6 years at Glenn Research Center. From the Raman scattering data, we produce spatially-mapped probability density functions (PDFs) of the instantaneous temperature, determined using a newly developed low-resolution effective rotational bandwidth (ERB) technique. The measured 3-scalar (triplet) correlations, between temperature, CH4, and O2 concentrations, as well as their PDF s, also provide a high-level of detail into the nature and extent of the turbulent mixing process and its impact on chemical reactions in a realistic gas turbine injector flame at elevated pressures. The multi-scalar triplet data set presented here provides a good validation case for CFD combustion codes to simulate by providing both average and statistical values for the 3 measured scalars.
Document ID
20080006647
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Kojima, Jun (Ohio Aerospace Inst. OH, United States)
Nguyen, Quang-Viet (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
October 30, 2007
Subject Category
Fluid Mechanics And Thermodynamics
Meeting Information
Meeting: NASA Fundamental Aeronautics 1st Annual Meeting
Location: New Orleans, LA
Country: United States
Start Date: October 30, 2007
End Date: November 1, 2007
Funding Number(s)
WBS: WBS 984754.02.07.03.19.03
Distribution Limits
Public
Copyright
Public Use Permitted.

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