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Abstract
Oscillation modes of a circular shock wave in supersonic radial flow were studied both experimentally and theoretically. The pressure fluctuation was measured on concentric positions to investigate modes of a circular shock wave in case of mean radii of 70 and 77 mm, and the A-D converted signals were statistically correlated. A simple model of an oscillating shock wave was proposed. Frequency of the oscillation increased from low to high values with the increase in its radius. The oscillation was mainly consisted of mode 0 superposed by modes of 1, 2 and 4. The mode 1 is considered to be weak. The experimental frequency of each mode agreed well with the theoretical results.
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Schedule a callMore From: JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties
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