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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 45461 (08)
- University: Sharif University of Technology
- Department: Mechanical Engineering
- Advisor(s): Abbaspour, Madjid
- Abstract:
- Regarding to significant role of marine pipelines in transferring oil, water and other products, a research was carried out to study the sediment transportation (Scouring) under pipelines which threaten pipelines. Interaction between fluid phase (flow field), structure phase (pipe) and sediment, determine scour profile shape and specifications of each phase which can change scour depth. In this research Flow-3D software was used to simulate scouring process under cylinder. First the flow field around cylinder near wall was studied and the scour depth under direct and oscillating flow was simulated. In addition, in next pace, the number of pipes and their distance were varied to measure effects of pipe’s configuration on scour depth.Also effect of distance of pipe from wall and Reynolds number has been studied. The model solves the three-dimensional Navier-Stokes equations using k-epsilon scheme and the continuity equation in addition of sediment transport equations. At last the results were verified with experimental data
- Keywords:
- Sediment Transport ; Scour ; Subsea Pipeline ; Scouring Under Pipe
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