Computer Simulation Studies on the Effect Overlap Ratio for Savonius Type Vertical Axis Marine Current Turbine
Authors
Abstract:
The Ocean has provided a new avenue in the quest for renewable energy. One potentialsource of energy is marine current, which is harnessed using either vertical or horizontal axis turbines.This paper describes a particular type of vertical axis turbine which is suitable for low current velocityapplications. The simulation of Savonius-type turbine, which hitherto has never been proposed formarine current energy application, is presented in this paper. A 3D computational model was builtand analyzed using a Computational Fluid Dynamic analysis using proprietary software. The overlapratio is identified as one of the important factors in Savonius turbine performance. This paperprovides results of the investigation for a range of overlap ratios between 0.1 and 0.6 and it was foundthat the maximum torque can be obtained at overlap ratio of 0.21.
similar resources
Experimental Studies on Savonius-type Vertical Axis Turbine for Low Marine Current Velocity
Renewable energy resources need to be explored to maintain and meet energy demand and replace the slowly depleting fossil fuels. Malaysia, surrounded by sea with long coastlines, is poised to exploit the potential of this energy. This research work aims at designing a suitable device to extract energy from Malaysian sea current. Malaysia’s ocean has a low current velocity averaging 0.56 m/s, ...
full textEffect of the Shape of Stator Blades on the Performance Output of a Vertical Axis Marine Current Turbine
Due to the diminishing reserves of fossil fuels and increased pollution from exploitation of these fuels, the world is focusing on the renewable energy sources. Energy from tidal waves is one of the most exciting forms of renewable energy because of its consistent nature. Hence, the predictable, consistent and reliable nature of marine currents has enthused the researchers to emphasize on harne...
full textSimulation Based Optimisation of Marine Current Turbine Blades
This paper discusses techniques for simulation based optimisation of marine current turbines, and the relative benefits and disadvantages of such methods. Blade Element Momentum codes, Computational Fluid Dynamics and Finite Element analyses, and subsequently the coupling of such techniques, are considered. The relevancy of design, search and optimisation with respect to complex fluid and struc...
full textVertical Axis Wind Turbine Case Study
This case study investigates the generator of a large offshore Vertical Axis Wind Turbine (VAWT). In particular this case study focuses on the effect of the inherent cyclic torque loading of the VAWT on the generator in terms of the costs and losses experienced. A spectrum of torque control strategies were created based on the ratio q of the allowed electrical torque variation to the mechanical...
full textEffect of Blade Faults on the Performance Characteristics of a Vertical Axis Wind Turbine
Due to the diminishing reserves of fossil fuels and increased pollution from exploitation of these fuels, the world is focusing on the renewable energy sources. Wind is being considered as one of the prime next generation energy sources. Considerable amount of research is being carried out on the innovative designs for maximizing the performance of wind turbines. Furthermore, a lot of research ...
full textEffect of rotor blade position on Vertical Axis Wind Turbine performance
In this paper a numerical study is presented with the aim of evaluating the performance output of three Vertical Axis Wind Turbine (VAWT) configurations. Here using Computational Fluid Dynamics (CFD) a two-dimensional Multi Reference Frame (MRF) approach has been used to perform steady state simulations. For this purpose an inlet velocity of 4m/s has been used along with rotor blade Tip Speed R...
full textMy Resources
Journal title
volume 23 issue 1
pages 79- 88
publication date 2010-01-01
By following a journal you will be notified via email when a new issue of this journal is published.
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023