Development of an Integrated System for Flow Visualization in Air Using Neutrally-Buoyant Rubbles
Technical rept. no. 2, 1 Feb 1969-30 Jun 1971
SAGE ACTION INC ITHACA NY
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A new technique for flow visualization in air is presented. This technique employs small, neutrally-buoyant bubbles to map out particle paths and measure velocities, even in turbulent aerodynamic flows. An integrated visualization system was developed, comprised of a unique means to generate the bubbles, a compact illumination unit and specialized photography. Three test programs were carried out in subsonic wind tunnels to assess the system performance. The tests are discussed and an evaluation is given. A number of photographs illustrate the various facets of the technique.
- Test Facilities, Equipment and Methods