INFLUENCE OF THE RADIUS OF CURVATURE ON THE DRAG INDUCED BY BILGE VORTICES

Wind-tunnel experiments were conducted in order to study the influence of the bilge curvature on the generation of bilge vortices. The geometric characteristics of the vortices were determined, the circulation and the vortical drag computed. The results show that the vortical drag decreases rapidly from 14 to 2 percent of the surface drag when the ratio of the radius of curvature to the maximum thickness of the ogive is increased from 0 to 0.12. It is therefore concluded that production of vortices at the bilge does not contribute significantly to the resistance to motion of actual ships. ( Author )

• Corporate Authors:

  University of Iowa, Iowa City

  Iowa City, IA  United States  52242
• Authors:
  • Tatinclaux, Jean-Claude
• Publication Date: 1967-2

Media Info

• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Bilges; Fluid resistance; Hulls; Vortices
• Uncontrolled Terms: Hull resistance
• Old TRIS Terms: Bilge vortices
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00001894
• Record Type: Publication
• Source Agency: Defense Documentation Center
• Report/Paper Numbers: IIHR-102 Tech Rpt.
• Contract Numbers: NONR161105
• Files: TRIS
• Created Date: Oct 30 1972 12:00AM