Separation of time-averaged turbulence components using the resonant Doppler velocimeter

The first use of resonant laser Doppler velocimeters for the separation of time averaged turbulence components is reported. The non intrusive technique takes advantage of laser absorption effects to measure velocity, temperature and pressure of a flowing gas thus eliminating particle lag. Sodium seeding was used in these experiments with a narrow linewidth dye laser. (P.J.B.)

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