Patent ID: 6685394
Filing Date: 2004-02-03
Classification: B63B,E21B,F15D

Abstract:
A system for use with a flowing-fluid element subject to vortex induced vibration, said system comprising:(a) a shroud defining a plurality of perforations, wherein the shroud is suitable for placement around the flowing-fluid element, and wherein the shroud is suitable for providing a percent or encirclement of the flowing-fluid element in the range of about 12% to about 80%, wherein the shroud has a cross-sectional circular segment shape of from about 43Â° to about 288Â°, wherein said flowing-fluid element is subject to a fluid current having a direction, and wherein said shroud is centered around said flowing-fluid element at an angle in the range of about 62 to about 72 degrees relative to the direction of said current; and (b) at least one separation member in contact with the shroud, wherein the separation member is suitable for positioning between the flowing-fluid element and the shroud to maintain the shroud and flowing-fluid element in relative position to each other.