Conceptual Design of a 100kW Energy Integrated Type Bi‐Directional Tidal Current Turbine

The development of a tidal current turbine that can extract maximum energy from the tidal current will be extremely beneficial for supplying continuous electric power. The present paper presents a conceptual design of a 100kW energy integrated type tidal current turbine for tidal power generation. The instantaneous power density of a flowing fluid incident on an underwater turbine is proportional to the cubic power of current velocity which is approximately 2.5m/s. A cross‐flow turbine, provided with a nozzle and a diffuser, is designed and analyzed. The potential advantages of ducted and diffuser‐augmented turbines were taken into consideration in order to achieve higher output at a relatively low speed. This study looks at a cross‐flow turbine system which is placed in an augmentation channel to generate electricity bi‐directionally. The compatibility of this turbine system is verified using a commercial CFD code, ANSYSCFX. This paper presents the results of the numerical analysis in terms of pressure, ...