FAIRINGS – PATENTED STANDARD AND ROV-FRIENDLY ADFS
The patented AIMS Dual-finned Flow Splitter (ADFS) fairings are used to suppress vortex-induced vibrations in any region of a steel catenary riser (SCR), drilling riser, or structural tendons. The ADFS is an alternative to the conventional “tear-dropped” fairing and is more stable and efficient at reducing drag and vortex induced vibration (VIV).
TECHNICAL SPECIFICATIONS
PRODUCT DESCRIPTION
Our ADFS suppression devices have been tested to high Reynolds Numbers showing a 95 percent efficiency (or higher) while possessing a very low drag coefficient. All of AIMS’ VIV suppression product designs are backed by full scale tank testing with Reynolds Numbers (Re) ranging from the low 1,000s to above 2,000,000. AIMS’ 3D matrices have been introduced into the SHEAR7 program for utilization by riser designers.
SPECIFICATION
Our material of construction, molded polyethylene, allows good manufacturing tolerances and repeatability, low drag coefficients, and high efficiency in VIV elimination. Other materials can be used upon request. Furthermore, AIMS can also coat the strakes to achieve Antifouling characteristics if desired.
AIMS standard design employs a 1.75 D aspect ratio and is 72” tall. Other designs can be manufactured upon request. AIMS has test data showing the change in drag and VIV with a reduction of the aspect ratio down to 1.5D.
The VIV Suppression Efficiency of AIMS fairings (ADFS) is 95 percent or greater. Our average Drag Coefficient, cd, is 0.45.
RECOMMENDED PRODUCTS
STRAKES – STANDARD AND PATENTED ROV-FRIENDLY
AIMS fixed-fin vortex strakes are designed for ease of installation and are custom manufactured to project specifications. The strakes can be installed via S-lay, J-Lay and Reel-Lay, as well as our patented ROV-friendly design.
PULTRUDED FIBERGLASS GRATING
AIMS’ DeltaSpan pultruded grating product offers excellent unidirectional strength and corrosion resistance. This product has been developed to meet specific requirements and is particularly suited for highly corrosive environments. It offers extended life and eliminates periodic maintenance and replacement costs making it the preferred alternative to conventional steel gratings.
Fiberglass Handrail Systems
DeltaRail meets your requirements, from small platforms to complex structures, with high-strength, maintenance-free handrails that are ideal for any location.