High-performance ocean energy harvesting turbine design – Detailed flow analysis with blade leaning strategy
| Autor: | Paresh Halder, Abdus Samad, B. Ranjith |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Wave energy converter
Blade (geometry) Internal flow 020209 energy Mechanical Engineering Flow (psychology) Oscillating Water Column Energy Engineering and Power Technology 02 engineering and technology Turbine Physics::Fluid Dynamics 020303 mechanical engineering & transports 0203 mechanical engineering Marine energy Principal component analysis 0202 electrical engineering electronic engineering information engineering Environmental science Marine engineering |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy. 233:379-396 |
| ISSN: | 2041-2967 0957-6509 |
| DOI: | 10.1177/0957650918787692 |
| Popis: | Oscillating water column wave energy converter is having low efficiency because of its principal component, a bidirectional turbine. An analysis of the internal flow of the turbine gives an idea of improving the performance through optimization of geometrical parameters. In this study, an impulse turbine of 0.3 m diameter with fixed guide vanes is numerically simulated by solving three-dimensional incompressible steady Reynolds averaged Navier-stokes equation with two-equation turbulence closure model. This study shows that the numerical results very well match with the experimental results. The detailed flow physics demonstrates that different types of losses occur in this type of turbine and shows that the downstream diverging path of the rotor and guide vane is responsible for low performance. In this study, the effect of guide vane lean, as well as the combined rotor and guide vane lean on the performance of the turbine, has been discussed in detail and found to increase the efficiency of the turbine. |
| Databáze: | OpenAIRE |
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