Flow Velocity Measurements by Image Processing of Optically Modulated Traces,
CALIFORNIA UNIV SAN DIEGO LA JOLLA
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A computerized flow visualization technique capable of quantifying the flow field automatically is described. The technique uses a time modulated illumination scheme to retrieve vectorial information from the pathlines of particles suspended in the flow. This technique has eliminated a major source of error in velocity reading which is common in conventional particle tracing techniques. Application of the present technique to the recirculating flow field of a two dimensional cavity is described. Velocity profiles obtained from the pathlines of the particles through the present technique show excellent agreement with the velocity profiles obtained using laser doppler velocimetry.
- Fluid Mechanics
- Test Facilities, Equipment and Methods