NDLI: Numerical investigation on the hydrodynamic performance of variable length blade tidal turbine: an attribute to enhance energy capture

Content Provider	IET Digital Library
Author	Arzu, Farhana Darvishi, Hossain Hassanpour Hashim, Roslan Bin Ghazvinei, Pezhman Taherei Soeb, Mahmudur Rahman
Abstract	In the marine industry, it is important to improve the performance of tida turbines to reduce power generation costs. Modification of existing tidal turbine models is necessary to boost performance. The main objective of the present study is to investigate the hydrodynamic performance of a model variable length blade tidal turbine by modifying the baseline rotor to improve the performance using blade element momentum theory (BEMT). The QBlade BEMT simulation results were validated with the available published data and are in good agreement. Furthermore, the key performance parameters (i.e. thrust, moment, and power coefficient) and power output were predicted using the BEMT code for different blade configurations of the model rotor. The simulation results were compared with a standard conventional fixed blade turbine model. Based on the results from the simulations, with the increase in the rotor blade lengths, the performance parameters, particularly peak power coefficients, were observed to be improved up to 10%. The power extraction was also enhanced up to 79% below-rated tidal velocities without any loss in performance at the rated condition. Hence, the model is more efficient compared to the conventional models.
Starting Page	347
Ending Page	352
Page Count	6
ISSN	17521416
Volume Number	11
e-ISSN	17521424
Issue Number	Issue 3, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/11/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2015.0479
Journal	IET Renewable Power Generation
Publisher Date	2016-11-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Baseline Rotor Blade Element Momentum Theory Energy Capture Hydrodynamic Performance Mechanical Engineering Power And Plant Engineering Power Generation Cost Rotors Tidal Power Stations Tidal Power Stations And Plant Turbines Variable Length Blade Tidal Turbine
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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