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Schematic drawing of the water tunnel test section. All measurements are in cm.
Photographs of the cavitating line vortex cores for . The maximum distance between vortices is . The flow is from left to right. (a) On the right there is a view of the trailing edge of the two hydrofoils. The vortices orbit, and the circled area to 3 chord lengths downstream of the trailing edges marks where radially oriented secondary vorticity bridges are first observed. The overall field of view is . (b) An image centered on the circled area of (a) where the merger region and two vorticity bridges are evident. The field of view is .
Close up images of the vortex merger region, . The flow is from left to right, and the field of view is (a) , and (b) .
Images of the merger region with varying free-stream pressure. (a) , (b) , and (c) . The flow is from left to right, and the field of view is .
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