Accession Number:

ADA179301

Title:

Continuing Experimental Studies of the Hydrodynamic Characteristics of Bluff Symmetrical Fairing Sections

Descriptive Note:

Final rept.

Corporate Author:

RAND CORP SANTA MONICA CA

Personal Author(s):

Report Date:

1986-10-01

Pagination or Media Count:

79.0

Abstract:

An experimental wind tunnel investigation was conducted to determine the hydrodynamic characteristics of bluff symmetrical sections with high thicknesschord ratios. The sections may be used as fairings for circular cylindrical members, such as towing cables and offshore drilling rig riser pipes, which are deeply immersed in the ocean environment so that they are cavitation free. The fairings serve to reduce drag and lateral vibrations due to vortex shedding. The sections tested were based on a family known as JFS-62M-TR mod with thicknesschord ratios of 0.25, 0.30, 0.35 an 0.40. Measurements included the two-dimensional profile drag coefficient, chordwise neutral stability point, and boundary layer transition and separation locations. Keywords Bluff bodies GHRGeneral Hydromechanics Research.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE