Accession Number:

ADA110459

Title:

Steady Hydrodynamic Loads Due to Vortex Shedding from the OTEC Cold Water Pipe.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1982-01-13

Pagination or Media Count:

57.0

Abstract:

This report is limited in scope to consideration of the problems caused by vortex shedding from flexible, bluff cylinders in steady current flows, as these problems apply to the OTEC cold water pipe. In particular, the steady deflections caused by the amplified drag forces that accompany vortex-excited oscillations are considered. Emphasis placed upon the discussion of design methods, applications of these methods to practical problems, and comparison with available experimental data. A discussion is given of laboratory and field studies that have been conducted with model OTEC cold water pipes. Various devices that have been developed for the suppression of vortex-excited oscillations also are discussed. A comparison is made of the effectiveness of various suppresion devices and procedures, and practical approaches to implementing their application are presented. The implications of vortex-induced hydrodynamic drag and the suppression of vortex-excited oscillations in OTEC cold water pipe design are discussed briefly.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Marine Engineering
  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE