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Opt Lett. 2004 Feb 15;29(4):355-7.

Laser imaging system for determination of three-dimensional scalar gradients in turbulent flames.

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  • 1Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551-0969, USA.


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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