Submarine Dynamic Stability Analysis in Shallow Waters Utilizing MATLAB

Research Area: Volume 8,Issue 1,Jan.,2019 Year: 2019
Type of Publication: Article Keywords: MATLAB, Submarine, Dynamic Stability, Pipelines, Cables, DNV
Authors:
  • Mohamed Hamdy
  • Mohamed M. Abo Elazm
  • Ahmed S. Bayoumy
  • Mohamed Fahmy M. Shehadeh
Journal: IJEIR Volume: 8
Number: 1
Month: January
ISSN: 2277-5668
Abstract:
A MATLAB program was developed in order to simulate the dynamic stability of un-trenched submarine cables and pipelines resting on the bottom of a 14m depth sea (shallow waters), utilizing the Fourier Decomposition method. The aim of this of the research is to develop a sophisticated understanding and an accurate estimation of the hydrodynamic forces acting on cables and pipelines due to combined effect of wave and current, and to preform dynamic stability analysis following the guidelines of DNV-RP-F109 for studying the dynamic response of the cable with presence of soil resistance. The main concern is to study the ability of the submarine pipeline/cable to be stable on the seabed using its own weight and if required, estimating extra weight to be added to achieve stability on the seabed as per DNV-RP-F109 recommendation. A validation of the developed hydrodynamic forces model with UWAHYDRO program developed at the Western Australia University by Youssef, B.S. is also included to confirm the ability of program to accurately estimate the hydrodynamic forces under given sea state
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