Tension-Leg Platform for Offshore Diffusor-AugmentedHydrokinetic Turbine

Abstract

Harnessing marine energy offers significant potential for advancing clean and sustainable power generation. This thesis focuses on the design and optimization of a diffuser-augmented hydrokinetic turbine, supported by a tension-leg platform, to harness ocean and tidal currents for renewable energy production. By incorporating diffuser technology, the turbine’s efficiency is enhanced, increasing the coefficient of power and enabling effective energy capture even in environments with lower current speeds. The research involves 2D and 2D axisymmetric modeling of the diffuser and turbine using Actuator Disk Theory (ADT), with tools such as Rhino and Star CCM+. Mounted on a floating tension-leg platform anchored to the seabed, the turbine is designed to exceed the Betz limit, maximizing power output and advancing offshore energy harvesting capabilities. This thesis is solely focused on the design and optimization of the hydrokinetic turbine, providing an in-depth analysis of diffuser performance. The findings contribute to the development of marine renewable energy technologies, promoting sustainable and efficient power generation from ocean and tidal currents.