NONLINEAR BEHAVIOUR OF FREE SPANNING PIPELINES EXPOSED TO STEADY CURRENTS - MODEL TESTS AND NUMERICAL SIMULATIONS

Flexible pipe model tests in steady current, carried out as part of submarine vortex shedding (SVS) project are briefly outlined as far as the effects on hydroelastic synchronisation induced by the pretensioning level in the models, the static sagged shape and the gap ratio are concerned. The results are presented and extensively discussed. The mathematical model set up to interpret the above results is described and the theoretical findings are used to explain possible mechanisms of hydroelastic synchronisation, coupled with the non-linear dynamic behaviour of the model. Applications on real free spanning pipelines are evidenced with examples.

• Supplemental Notes:
  • European Offshore Mechanics Symposium, 1st 20-22 Aug 1990, Trondheim, Norway. Sponsored and publ by the International Soc of Offshore & Polar Engrs (ISOPE), Proc, p 368 [7 p, 12 ref, 2 tab, 10 fig]
• Authors:
  • Tura, F
  • Vitali, L
• Publication Date: 1990

Language

• English

Subject/Index Terms

• TRT Terms: Numerical analysis; Ocean currents; Pipelines; Simulation
• Uncontrolled Terms: Model tests
• Old TRIS Terms: Current forces
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 00699795
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM