SHIP-SHIP INTERACTION IN SHALLOW WATER

Previous work on the subject of hydrodynamic interaction between ships relied mainly on theoretical treatment as few quantitative experimental results were available at the time. Recent studies at the Ship Division, National Physical Laboratory have incorporated some experimental measurements of interaction forces and moments between various ship models. These are presented and compared with computed calculations using a two-dimensional theory. This comparison enables conclusions to be drawn as to the short-comings of the theory and suggests areas where it might be improved, notably by the inclusion of free-surface effects. Some experiments designed to relate certain features of hull design to lift-induced interaction forces are presented and it is shown that lift-induced crossflow on the skeg and rudder significantly affects the sense and magnitude of the interaction forces and moments at certain overlaps. The measurement techniques and accuracy of the experiments which were carried out in the large circulating water channel at Ship Division, NPL, are discussed in some detail. Order from: BSRA as No. 46,660.

• Corporate Authors:

  Naval Hydrodynamics, Symposium

  London,   England 
• Authors:
  • Dand, I W
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: 17 p.

Subject/Index Terms

• TRT Terms: Free surface; Hydrodynamic pressure; Maneuvering; Ship motion
• Old TRIS Terms: Free surface effects; Hydrodynamic forces; Model testing; Shallow water maneuvering; Ship interaction
• Subject Areas: Marine Transportation; Operations and Traffic Management; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00170553
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM