The Ventilated Trouser
VIV Suppressor (the VT).
TRACK RECORD of TESTING, DEMONSTRATIONS and APPLICATION PROOFING.
Initial proof on concept and geometry tests in Solent Towing Tank – UK
Extended and confirmatory tests on geometry at various diameters and current velocities. Findings and results consistent with proof of concept tests. IFREMER flume Boulogne , France.
Series of research tests demonstrating negative lift coefficient and cylinders in tandem. IFREMER flume , Boulogne , France.
Demonstration at full scale on 21inch slick (bare) riser. MARINTEK , tow tank , Trondheim , Norway. Results show consistency at over 95% ASR ( Amplitude Suppression Ratio).
Demonstration of VT on a complex arrangement of different diameter cylinders, Full scale stiffened wireline lubricator for use by Shell International on a sensitive investigation project. Solent Towing tank – UK
Demonstration of an application for catenary risers and mooring lines. IFREMER, Boulogne, France
7. Direct comparison of amplitudes of catenary risers and mooring lines with and without VT fitted. Results consistently recorded 95% ASR. IFREMER flume, Boulogne, France.
8. Test programme to demonstrate capability of VT to contain and completely suppress FIV of a group of loose umbilical and control hoses in a strong current. Solent Towing Tank, Southampton UK.All the above have been recorded, logged and videoed and can be found in the video section of the site.
9. Full scale ‘dry’ demonstration of VT deployment and recovery from a 7 inch completion riser, and a 16m tall scaffolding tower. Fleetwood UK.
10. Full-scale deployment and recovery of VTs from a 7inch completion riser and from a group of umbilical and control hoses using techniques perfected in 9 above. Warren Joe Douglas Jack-up rig, Trinidad.
All the above have been recorded, logged and videoed and can be found in the video section of the site.
