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Lookup NU author(s): Dr Mohammed Abdul Hannan
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
This study presents results from the numerical analysis of the performance of the Horizontal Axis Tidal Turbine under the influence of current from various directions. The sliding mesh in ANSYS Fluent is used to simulate the rotating turbine. The realizable K-ε model is used to model the turbulence. The ANSYS model is verified against experimental data by comparing the power coefficient for various velocities of tidal current coming from zero-degree direction. After that, the effects of tidal current directions are investigated by considering nine approaching angles. It is found that the maximum Power Coefficient occurs when the direction of incoming flow is parallel to the rotational axis of the turbine, regardless of incoming flow velocity. Thrust coefficient, on the other hand, found to reach the maximum when deflection of incoming flow is 15°. In an actual marine environment, it is difficult to ensure that the incoming flow of water will always be parallel to the rotating axis of the turbine. Therefore, to ensure efficient energy capturing, it is suggested that the flow directions should be kept within 15° from the rotational axis of the turbine, especially for low incoming velocity.
Author(s): Hannan MA, Ahmed YA, Zaid NDB, Kamal IZM
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 5th International Conference on Advanced Technology and Applied Sciences 2020 ICATAS 2020 in conjunction with the 6th Malaysia-Japan Joint International Conference 2020 MJJIC 2020 (ICATAS-MJJIC 2020)
Year of Conference: 2020
Online publication date: 01/03/2021
Acceptance date: 07/01/2021
Date deposited: 03/09/2021
Publisher: Institute of Physics Publishing Ltd.
Series Title: IOP Conference Series: Materials Science and Engineering