SHIP MOTION IN NON-HOMOGENEOUS MEDIA

A survey considers some new hydrodynamical aspects of sea- borne vehicles resulting from non-homogeneity of the water. Traditional analyses of various ship motion problems assume a constant water density and ignore the viscosity of the fluid. The assumption of constant water properties fails in cases of highly stratified seas, exhibiting a marked variation of density with depth or, alternatively, in the presence of a muddy bottom in shallow water, where the viscoelastic properties of the underlying mud layer have a pronounced effect on the propulsion and manoeuvrability characteristics of the vehicle. Another source of inhomogeneity is the spatial non-uniformity of the ambient flow-field and the commonly employed long-wave and slowly varying flow assumptions. All these effects (density stratification, muddy viscoelastic sea-bed, non- uniform stream) are discussed with special reference to marine hydrodynamics problems.

• Supplemental Notes:
  • Ship Technology Research, v 42 n 3, July 1995, p 140 [17 p, 48 ref, 11 fig]
• Authors:
  • Miloh, T
• Publication Date: 1995

Language

• English

Subject/Index Terms

• TRT Terms: Internal waves; Nonuniform flow; Ship motion; Viscous flow; Wave resistance
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00717290
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Mar 4 1996 12:00AM