THICKNESS EFFECT FOR YAWED SURFACE-PIERCING BODIES

Most existing studies about ships or surface-piercing bodies deal with symmetrical flows and cannot be used for yawed flow (e.g. for sailing boats or manoeuvring ships). The authors have previously developed such computations for zero-thickness simple shape surface-piercing bodies. However, such bodies are not generally very thin, so a panel method is presented, using elementary Kelvin singularities. Sources are distributed on the body surface and normal doublets on the mean camber line and on the wake, chosen parallel to free-stream velocity. Thus, the line integral involving derivatives of the doublet strengths and difficult to compute is zero because doublets are distributed on a plane. First results obtained are presented; they have been checked both for F=0 and infinity. For finite Froude numbers, some preliminary computations are presented but numerical difficulties have been observed particularly for finite Froude numbers.

  • Supplemental Notes:
    • CADMO 92, 4th Intl Conf on Computer Aided Design Manufacture and Operation in the Marine and Offshore Industries; Oct 1992; Madrid, Spain. Sponsored by Wessex Inst Technology, Southampton, U.K. & Canal de Experiencias Hidrodinamicas, Madrid, Spain. Pprs. Pub by Computational Mechs Publ Southampton, U.K. Section 2, p 127 [18 p, 17 ref, 8 fig]
  • Authors:
    • Ba, M
    • Coirier, J
    • Guilbaud, M
  • Publication Date: 1992

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00716194
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Feb 28 1996 12:00AM