NONLINEAR FREE-SURFACE FLOW AROUND AN IMPULSIVELY MOVING CYLINDER

Nonlinear free-surface flow around an impulsively accelerating, vertical surface-piercing cylinder is investigated analytically. The exact solutions for the velocity potential and free-surface elevation are derived up to the third order by the small-time- expansion method. The hydrodynamic pressure acting on the cylinder wall is also obtained. A constant horizontal acceleration is considered to illustrate the theoretical results. It is found that during the initial stage of this impulsive motion, no travelling free-surface waves are present. A surge of water appears on the upwind face and a depression forms on the downwind face. The second-order free-surface elevation is singular along the contact line between the fluid surface and the cylinder surface. The nonlinear pressure distribution on the cylinder surface has been determined.

  • Availability:
  • Supplemental Notes:
    • Journal article
  • Authors:
    • Wang, K W
    • Chwang, A T
  • Publication Date: 1989-9

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  • Accession Number: 00658484
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM