Methods and systems for reducing drag and vortex-induced vibrations on cylindrical structures

摘要

Apparatus for controlling drag and vortex-induced vibration exerted onto a substantially cylindrical element of a fixed position subjected to a fluid flowing environment. Apparatus of the invention comprise a sleeve comprising an ultra-smooth surface. Methods for installing such apparatus onto cylindrical elements, and systems for controlling drag and vortex-induced vibrations in which a substantially cylindrical marine element has an ultra-smooth effective surface.