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Updated: Aug 26, 2026

Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
Published on: March 12, 2019
Laser imaging system for determination of three-dimensional scalar gradients in turbulent flames
Adonios N Karpetis1, Thomas B Settersten, Robert W Schefer
1Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551-0969, USA. ankarpe@sandia.gov
Abstract:
An imaging system for the measurement of three-dimensional (3D) scalar gradients in turbulent hydrocarbon flames is described. Combined line imaging of Raman scattering, Rayleigh scattering, and CO laser-induced fluorescence (LIF) allows for simultaneous single-shot line measurements of major species, temperature, mixture fraction, and a one-dimensional surrogate of scalar dissipation rate in hydrocarbon flames, while simultaneous use of two crossed, planar LIF measurements of OH allows for determination of instantaneous flame orientation. In this manner the full 3D scalar dissipation can be estimated in some regions of a turbulent flame on a single-shot basis.
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