Title :
Reduction of cable resistance by helical-ridge type fairing
Author :
Hosoya, Shinichi ; Shibata, Hidenori ; Okita, Shigem
Author_Institution :
Nippon Marine Enterprises Ltd., Kanagawa, Japan
Abstract :
A Karman vortex commonly occurs when a cylinder is pulled through a fluid. Because of the vortex, the cylinder vibrates and the towed cable receives extra resistance. IN MCS investigation, this is a big problem and cables are often damaged. Therefore, it is important to mitigate the cable resistance when towing objects. Vibration and resistance can be reduced by using various fairings, such as a helical ridge. The fluid resistance is cut down about 50% by the helical ridge type fairing.
Keywords :
Earth crust; electric resistance; oceanographic equipment; seismology; submarine cables; vibrations; vortices; Karman vortex; air gun; cable resistance; cable vibration; deep submersible Shinkai 2000; helical-ridge type fairing; multichannel seismic survey system; ocean bottom seismometers; paravane; umbilical cable; Cables; Guns; Marine technology; Oceans; Reflection; Remotely operated vehicles; Sea measurements; System testing; Umbilical cable; Underwater vehicles;
Conference_Titel :
OCEANS 2003. Proceedings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-933957-30-0
DOI :
10.1109/OCEANS.2003.178333
