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Showing 1 to 7 of 7 for “"Filtered Rayleigh Scattering"”.
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Unbiased Filtered Rayleigh Scattering Measurement Model for Aerodynamic Flows
The filtered Rayleigh scattering (FRS) optical diagnostic has become an attractive technique for advanced aerodynamic measurements. The appeal of FRS is that it can simultaneously quantify density, temperature, and vector velocity. Additionally, it is entirely non-intrusive to the flow since the …
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Filtered Rayleigh Scattering with an Application to Force Component Decomposition
Filtered Rayleigh scattering (FRS) is a laser-based measurement technique that makes use of the scattering of light off particles that are much smaller than the wavelength of light that hits them (i.e., Rayleigh scattering of air molecules). The scattered laser light is altered after encountering …
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Multi-Property Internal Flow Field Quantification using Molecular Filtered Rayleigh Scattering
… practical, non-intrusive measurements using filtered Rayleigh scattering (FRS) are presented and analyzed for the multi-property quantification of internal flow fields. Validation is challenging in applying computational fluid dynamics (CFD) solutions to real-world scenarios, necessitating …
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Ultraviolet (UV) Laser Implementation, Signal Model, and Measurement Sensitivities in Filtered Rayleigh Scattering for Aerodynamic Flows
Filtered Rayleigh scattering (FRS) is a non-intrusive, optical measurement technique that can currently provide time-averaged, simultaneous planar measurements of three-component velocity, static temperature, and static density of aerodynamic flows. Development of the FRS technique has typically …
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Measurements in a compressible planar shear layer with a thermal gradient
… Temperature field measurements were made via Filtered Rayleigh Scattering along the central streamwise-transverse plane, and the mean transverse profiles of those temperature fields calculated. It was found that the temperature field of the thermal mixing layer becomes fully self-similar much …
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Development of Laser-Spectroscopic Techniques for New Detection Schemes in Combustion Diagnostics
… of different techniques. The development of UV filtered Rayleigh scattering (FRS) for thermometry and fuel/air ratio measurements, using a frequency tripled, single-longitudinal-mode alexandrite laser at ~254 nm together with an isotopically enhanced mercury filter, is examined first. Mercury …
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Velocity, temperature, and electric field measurements on a plasma-assisted hydrogen diffusion flame
… species measurements of the flame, by means of Rayleigh or Raman scattering techniques, in different regimes demonstrated a change in the fuel mixing structure and location of the reaction zone due to the position and intensity of the plasma-induced toroidal vortex. Finally, optical electric …