Two-color volumetric laser-induced fluorescence for 3D OH and temperature fields in turbulent reacting flows
- Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)
- Spectral Energies, LLC, Dayton, OH (United States)
- Purdue Univ., West Lafayette, IN (United States)
two-color, volumetric laser-induced fluorescence (TC-VLIF) was demonstrated for three-dimensional, tomographic imaging of the structural properties of the OH radical and temperature field in a turbulent hydrogen-air flame. Two narrow-band laser sources were tuned to the Qi(5) and Qi(14) transitions of the (1,0) band in the A2E<—X2II system and illuminated a volumetric region of the flame. Images from eight unique perspectives collected simultaneously from each of the two transitions were used to reconstruct overlapping 011 fields with different Boltzmann fractions and map the 3D temperature distribution with nanosecond precision. Key strategies for minimizing sources of error, such as detector sensitivity and spatial overlap of the two fields, are discussed.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1485853
- Report Number(s):
- SAND--2018-12691J; 669857
- Journal Information:
- Optics Letters, Journal Name: Optics Letters Journal Issue: 12 Vol. 43; ISSN OPLEDP; ISSN 0146-9592
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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