Abstract
In this paper we will describe recent advances made in our laboratory in the development of both high-speed mixture fraction ([) imaging and simultaneous mixture fraction and velocity imaging in turbulent nonreacting jets. High-repetition rate mixture fraction imaging has been developed in turbulent jets using planar Rayleigh scattering imaging, with the goal of extending this measurement capability to include simultaneous high-speed planar velocity measurements using particle imaging velocimetry (PIV). In this respect, conventional Rayleigh scattering imaging will be replaced with Filtered Rayleigh scattering (FRS), so that [ [ [ [ can be measured in the presence of the PIV seed particles without interference. In this paper, we will report a successful demonstration of high-speed (10 kHz) mixture fraction imaging using Rayleigh scattering and progress towards simultaneous mixture fraction and velocity imaging using FRS/Mie scattering at low (10 Hz) repetition rates. Future work entails merging the two independent work paths to enable a simultaneous high-speed mixture fraction/velocity measurement capability.
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