Conference Paper Correlation of fluctuating velocity in the wake of an oscillating square cylinder with openings or appendages

Nakato, Seiji  ,  中藤, 誠二

Description
Correlation of wind velocity in the wake of stationary and oscillating square cylinders was studied in wind tunnel experiment. Models of square cylinders with openings or appendages for preventing vortex shedding were employed and oscillated with approximate triangle wave of two different periods. For normal square cylinder, component of vortex shedding frequency was dominant and oscillation did not affect spectra, correlation coefficient and coherence of fluctuating velocity. For square cylinder with openings, correlation increased with oscillation. On the contrary, both stationary and oscillated cylinders with appendages show low correlation. In general, vortex shedding was not strengthened or stabilized by forced oscillation without case that vortex shedding frequency is close to frequency of oscillation.
Meeting Information: First International Symposium on Flutter and its Application (May 15-17, 2016. Mielparque-tokyo), Minato-ku, Tokyo, Japan
Physical characteristics: Original contains color illustrations
形態: カラー図版あり
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https://repository.exst.jaxa.jp/dspace/bitstream/a-is/612445/1/AA1630046021.pdf

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