Drift force on a bottom-mounted slightly porous vertical cylinder fixed in regular waves |
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Authors: | Hiroshi Kagemoto |
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Institution: | (1) Department of Environmental Studies, Graduate School of Frontier Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, JP |
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Abstract: | Explicit expressions are derived for the drift force that will act on a bottom-mounted, slightly porous vertical cylinder
fixed in regular waves. The drift-force expressions derived both from the near-field and the far-field are shown. It is indicated,
and numerically demonstrated, that the conventional far-field formula does not hold for a porous body, but needs the additional
term of a near-field body-surface integration.
Received: July 4, 2002 / Accepted: November 6, 2002
Acknowledgment. The author would like to acknowledge Prof. Kashiwagi, of Kyushu University, for indicating the work of Havelock relating
to Eq. 20.
Address correspondence to: H. Kagemoto (e-mail: kagemoto@k.u-tokyo.ac.jp) |
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Keywords: | Drift force Porous body Bottom-mounted vertical cylinder |
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