FAR-FIELD FLUID-STRUCTURE INTERACTION: A COMPARISON BETWEEN THE DOUBLE ASYMPTOTIC AND PLANE WAVE APPROXIMATIONS

This paper is concerned with the numerical modelling of the hydroelastic interaction between a structure and surrounding fluid, with particular emphasis on the far-field effect of the fluid medium on the response of floating and submerged structures. The phenomena of reflections radiating from artificial boundaries are fist explained. Then the paper discusses two formulations which simulate the effect of a non-reflecting boundary: the Doubly Asymptotic Approximation (DAA) and the Plane Wave Approximation (PWA). Next, exponential and step plane waves are both employed to shock loading. The implementation details of the proposed formulation are presented and discussed. Numerical results which serve as a comparison between the boundary element DAA and the PWA are the presented. Conclusions are drawn the final section.

• Supplemental Notes:
  • ISOPE 95, 5th Intl Offshore & Polar Engng Conf; 11-16 June 1995; The Hague, The Netherlands. Sponsored by ISOPE, USA et al. Procs. Publ by ISOPE, ISBN 1-880653-19-2. Vol III, p 378 [6 p, 14 ref, 5 fig]
• Authors:
  • Hamdan, F H
  • HOBBS, R E
• Publication Date: 1995

Language

• English

Subject/Index Terms

• TRT Terms: Approximation (Mathematics); Mathematical models; Underwater structures
• Uncontrolled Terms: Fluid-structure interaction; Numerical models
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00733783
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Mar 27 1997 12:00AM