scholarly journals Performance evaluation and modelling of the Atir marine current turbine

2021 ◽  
Author(s):  
Eloy Díaz‐Dorado ◽  
Camilo Carrillo ◽  
Jose Cidras ◽  
David Román ◽  
Javier Grande
Keyword(s):  
Performance Evaluation ◽  
Marine Current Turbine ◽  
Marine Current ◽  
Current Turbine

Design optimization of a marine current turbine having winglet on blade

2021 ◽  
Vol 239 ◽  
pp. 109877
Author(s):  
Murali Kunasekaran ◽  
Shin Hyung Rhee ◽  
Nithya Venkatesan ◽  
Abdus Samad
Keyword(s):  
Design Optimization ◽  
Marine Current Turbine ◽  
Marine Current ◽  
Current Turbine

Design and Analysis of a Marine Current Turbine

2017 ◽  
Author(s):  
T. Karthikeyan ◽  
E. J. Avital ◽  
N. Venkatesan ◽  
A. Samad
Keyword(s):  
Pitch Angle ◽  
Flow Simulation ◽  
Ocean Current ◽  
Power Coefficient ◽  
Design Parameters ◽  
Marine Current Turbine ◽  
Commercial Code ◽  
Marine Current ◽  
Current Turbine ◽  
Blade Pitch Angle

Ocean stores a huge amount of energy and ocean current energy can be a viable source in future. In this article, an axial marine current turbine has been optimized to enhance its power coefficient through numerical modeling. The blade pitch-angle and number of blades are the design parameters chosen for the analysis to find the optimal design. A commercial code for CFD simulations with in-house optimization code was used for the analysis. It was found that, changing the blade pitch-angle and reducing the number of blades can improve the turbine’s coefficient of power. This is due to increase in lift and reduction of losses caused by turbulence near the downstream of the turbine. The article presents flow-simulation difficulties and characteristic curves to identify the differences between the actual and optimized turbine. The detailed flow physics is discussed and pictured in the post processed plots.

Augmented Diffuser for Horizontal Axis Marine Current Turbine

2016 ◽  
Vol 7 (1) ◽  
pp. 235 ◽  
Author(s):  
Aly Hassan Elbatran ◽  
Omar Yaakob ◽  
Yasser Ahmed ◽  
Firdaus Abdallah
Keyword(s):  
Tidal Current ◽  
Renewable Energy Sources ◽  
Research Work ◽  
Horizontal Axis ◽  
Offshore Wind ◽  
Water Current ◽  
Maximum Efficiency ◽  
Marine Current Turbine ◽  
Marine Current ◽  
Current Turbine

<span>The potential of renewable energy sources is enormous as they can make a major contribution to the future of energy needs. The ocean has a great potential to become a practical and predictable energy source compared to other energy resources such as solar, wind, and nuclear. It offers different sources of energy which can be utilized namely wave, tidal, offshore wind, thermal, and tidal current. Among these sources, marine tidal current has major advantages such as higher power availability and predictability. The main objective of this research work is to design and develop a horizontal axis marine current turbine (HAMCT) that suitable for operating within Malaysian ocean, which has low speed current (0.5 – 1 m/s average). A prototype of augmented diffuser 4-bladed HAMCT applying NACA 0014 was proposed in the current study. The turbine model has 0.666 m diameter, and it was designed to produce as much as power from flowing water current. Model was constructed and tested at Marine Technology Center (MTC) in three conditions, namely, free tow testing, ducted tow testing, and ducted diffuser tow testing in order to predict the power and efficiency of the turbine system. The results showed that the application of duct was significant to concentrate the flow and diffuser arrangement was effective when it was placed behind of the rotor in this condition of low water current speed. The maximum efficiency Cp obtained in the current system was 0.58.</span>

Sign in / Sign up

Export Citation Format

Share Document