초록 ▼

Smooth buoyancy cylindrical elements having a surface roughness coefficient of K/D less than or equal to 1×10-4,where K is the average peak-to-trough roughness and D is the effective outside diameter of said the cylindrical element are affixed about marine elements to decrease vortex induced vibrati

Smooth buoyancy cylindrical elements having a surface roughness coefficient of K/D less than or equal to 1×10-4,where K is the average peak-to-trough roughness and D is the effective outside diameter of said the cylindrical element are affixed about marine elements to decrease vortex induced vibration, thereby decreasing stress and loading on the marine elements.

대표청구항 ▼

Smooth buoyancy cylindrical elements having a surface roughness coefficient of K/D less than or equal to 1×10-4,where K is the average peak-to-trough roughness and D is the effective outside diameter of said the cylindrical element are affixed about marine elements to decrease vortex induced vibrati

Smooth buoyancy cylindrical elements having a surface roughness coefficient of K/D less than or equal to 1×10-4,where K is the average peak-to-trough roughness and D is the effective outside diameter of said the cylindrical element are affixed about marine elements to decrease vortex induced vibration, thereby decreasing stress and loading on the marine elements. te ends and along said longitudinal axis thereof. 5. The assembly of claim 4 wherein said central bore is spaced radially inwardly from said bottoms of said annular grooves. 6. The assembly of claim 1 wherein said end structure closing said interior chamber at said upper end of said tubular body is an end cap removably attached to said tubular body at said upper end thereof. 7. The assembly of claim 1 wherein said interior chamber of said tubular body has a substantially cylindrical shape. 8. The assembly of claim 1 wherein said elongated body made substantially of a polyurethane material has a substantially cylindrical configuration. 9. The assembly of claim 1 wherein said elongated body made substantially of a polyurethane material is made of black polyurethane of Shore A 90+/-5.