Submarine Cables and Pipelines that are used for the purpose of exchanging Vast Information and Energy Transportation are industrially very Important Structures. Cables installed on the Seabed ground are often damaged by the Net or Anchor. The cause is unknown, but Sharks often attack and damage it. Submarine Structures may be damaged by Natural Phenomena such as Sea Breeze caused by Ocean Currents and Wave, Earthquakes, Friction with the Seabed.
The Root of Troubleshooting is the Analysis of the Exact Flow Characteristics of flow around the Basic Installation Environment is required. Directions designed to Ocean Structures to be safe should be prepared in consideration of Erosion, Sedimentation and Surrounding Flow Environment of the Seabed Environment. And it should be applied.
Installation through the understanding of the Environment around the Submarine Cable, Topographical Features and Flow Analysis required installation of Submarine Cable safety enhancement required. In order to predict the Bottom Material Change through Analysis of the Flow of the surrounding flow(Ocean Current), Flow Characteristics were considered.
It was modeled as Cylinder type of Marine Structure such as Submarine Cable and Pipeline. And the Height(h) and Cylinder Space(s) of the Seabed installed from the Seabed were changed. And analyzed the Characteristics on the Influence of Seabed. Distribution of both Qualitative Flow Velocity and Turbulence intensity was analyzed for Flow Characteristics for Images measured by Numerical Analysis and PIV method.
It was confirmed that the Model Experimental Results executed and the Flow Characteristics of Numerical Analysis were implemented in the same way. For this Reason, We could compare the Quantitative Flow Capacity of the Physical Model according to the Study conditions. We confirmed that the Influence of the Structure of the First Cylinder and the Influence of the Second Cylinder Influences the change of the size of the Structure and the Structure of the Second Cylinder. Looking at the Fluid Force acting on the Two Cylinders, Considering the Balance of the Second Cylinder Acting Force, s/d=1.75 is the Most stable. Then, it was confirmed that relatively little Physical Force is exerted by h/d=0.75 and by condition comparison.