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AMDSB Molecular Flow Diagnostics Research Portfolio rayleigh scattering
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  MEMS sensor systems subheading
   
 
Molecular Based Flow Measurement Techniques
Molecular-based techniques allow measurement of fluid properties without seeding a flow with particles. Seeding flows with particles is difficult in many situations and provide erroneous results in others. Molecular-based techniques also allow measurement of multiple fluid properties including velocity, density, gas composition, sound speed, temperature, and Mach number. These molecular-based methods are used to study a wide variety of flows in subsonic, supersonic and hypersonic wind tunnels as well as combustion flows. The Advanced Measurements and Data Systems Branch (AMDSB) is developing and applying numerous molecular based single-point, multi-point and imaging techniques.
 
lita   Laser Induced Thermal Acoustics (LITA)
Measures sound speed, velocity, Mach number.
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fleet   Femtosecond Laser Electronic Excitation and Tagging (FLEET)
Velocity and temperature measurement in unseeded gas flows
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cars   Dual Pump Coherent Anti-Stokes Raman Spectroscopy
(DP-CARS)

Measures temperature and species concentrations.
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rayleigh scattering   Rayleigh Scattering
Measures velocity, temperature and density.
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raman scattering   Raman Scattering
Measures temperature and species composition.
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no plif   Nitric Oxide Planar Laser-Induced Fluorescence (NO PLIF)
Flow visualization and velocity measurement.
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plif   Ultra-Violet Iodine Planar Laser-Induced Fluorescence
(UV I2 PLIF)
Flow visualization, density, and temperature measurement.
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Page Curator: Lisa Le Vie
Last Updated: April 2017
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