Project 70: Vortex-induced Vibration of Catenary Riser

Contact Information:

Prof. Zhou Dai

Project Description and Objectives:

Highly flexible risers, such as steel catenary risers, are widely deployed in the deep-water drilling industry to convey oil from the seabed to the sea surface since it can offer a low-cost alternative to conventionally used rigid risers on floating platforms and can also provide economic riser design solutions for fixed platforms. As placed within ocean currents, Vortex-induced vibrations (VIV) would be excited for such a long flexible structure with bluff cross-sections and possible fatigue damage resulting from VIV on these structures requires a careful calculation and prediction of the responses. In this project, three-dimensional spectral/hp computations will be performed to study the fundamental mechanisms of vortex-induced vibration of a flexible catenary riser in the laminar flow regime. This will be a first step to understand the complex responses of a long flexible riser in the turbulent flow regime in real engineering situation.

Eligibility Requirements:

The interested student should have a basic knowledge of hydrodynamics and numerical simulation.

Main Tasks:

Finish a research report.

Give two research presentations (a. references review; b. technical presentation).

Submit one paper to a journal as a co-author.

Website:

Lab: N/A

School: http://naoce.sjtu.edu.cn/en/