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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Numerical investigation on the energy recovery from waste water by ducted savonius microgenerators
Numerical investigation on the energy recovery from waste water by ducted savonius microgenerators
Author : TREFILETTI L. (1), PIPITONE G. (2), ADAMO G.(3), TUMINO D.(4) & DE MARCHIS M.(5)
Nowadays the energy production with alternative or ecological method is a fundamental issue relating to the health of our
planet. The possibility of using non-recyclable systems and products becomes significant, especially if it concerns
wastewater. Savonius is a typical wind turbine able to produce energy with low costs. The proposed research is mainly
aimed to investigate on the possibility of recovering energy in open channel flow, as wastewater ducts or irrigation
channels, using Savonius turbines. The analysis is carried out by means of Computational Fluid Dynamic (CFD)
technique. To this aim the commercial code ANSYS®Fluent® was used. Several numerical experiments have been
performed in order to analyse the fluid dynamic characteristics of Savonius micro-generators, in order to evaluate the
behaviour of a Savonius turbine with vertical axis in terms of performance coefficient (Cp) and tip speed ratio (TSR). Bidimensional
simulations have been carried out, considering some geometrical parameters and boundary conditions. In
particular, turbines with different values of blades eccentricity, of asymptotic fluid flow velocity and different values of the
rotational velocity have been studied. This first results showed that the performance coefficient achieved in water channel
are clearly higher than those observed in air, thus showing the attractiveness of Savonius turbines in hydraulic
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Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 20/08/2015
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