Prof. Dai Zhou
Project Description and Objectives
For this project, three-dimensional spectral/hp computations will be executed to study the fundamental mechanisms of vortex shedding in the wake of a catenary riser at a low Reynolds number of 100. The project will focus on three aspects:
Flow over a catenary cylinder with a free stream parallel to the plane of curvature. We will numerically investigate the wake dynamics behind the catenary configuration at Re = 100 in order to characterize the wake topology. In addition, the evolution of hydro-forces and field variables along the span distance will be examined.
Wake characteristics of stationary catenary risers with different incoming flow directions. Through the three-dimensional numerical investigation, flow past a freely hanging stationary riser in a catenary shape, where the angle of incoming flow direction with respect to the plane aligned with the CR will range from α= 0°~90° at a low Reynolds number of 100.
A direct numerical simulation study of flow past a freely vibrating CR/curved circular cylinder. Vortex induced vibration of a long flexible cable at a Reynolds number between 100 and 200, corresponding to laminar and early transitional flow states, will be studied in this project.
Interested students should have basic knowledge of hydrodynamics and numerical simulation.
Finish a research report.
Give two research presentations (a. references review; b. technical presentation).
Submit one paper to a journal as a co-author.