JOURNAL OF THE FLOW VISUALIZATION SOCIETY OF JAPAN
Online ISSN : 1884-0361
Print ISSN : 0287-3605
ISSN-L : 0287-3605
Observation of the Flows Around a Circular Cylinder with the Photographs Taken in a Long Exposure Time
Hiroshi NAGATAMasanori SENGA
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1988 Volume 8 Issue Supplement Pages 123-126

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Abstract
Flows around a circular cylinder which is stationary, rotating, or oscillating in a uniform flow have been visualized by hydrogen bubble techniques. The photographs of the flows are taken in a long exposure time in order to make clear the timeaveraged characteristics of the flows. The shapes of the streamlines near the stagnation point and the separation points of the cylinder can be determined accurately by analyzing these photographs. Time-averaged patterns of the near wake of the oscillating cylinder are obtained and the relation between these patterns and the drag of the cylinder is discussed.
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© The Visualization Society of Japan
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