Second-order low-frequency wave forces on a vertical circular cylinder

Chinpu Zhou, Philip L.F. Liu

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

Using the multiple-scale perturbation method, the diffraction of a nonlinear nearly periodic wavetrain by a vertical circular cylinder is investigated. The envelope of the incident wavetrain is assumed to modulate slowly in the direction of wave propagation. The relationship between the envelopes of incident and scattered waves is derived. It is shown that second-order scattered set-down waves propagate only at the long-wave velocity (gh)½. The formula for low-frequency wave forces acting on the cylinder is presented. The low-frequency wave forces, which are second-order quantities, are caused by set-down waves beneath the wavetrain and the results of the self-interactions of the leading-order first harmonic wave components. Numerical solutions are presented for the case where the wave envelope varies sinusoidally.

原文English
頁(從 - 到)143-155
頁數13
期刊Journal of Fluid Mechanics
175
發行號3
DOIs
出版狀態Published - 1987 2月

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 材料力學
  • 機械工業

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