Numerical simulation of two-bladed Savonius water turbine with deflector
by Mithinga Basumatary; Agnimitra Biswas
International Journal of Renewable Energy Technology (IJRET), Vol. 7, No. 4, 2016

Abstract: The objective of the present study is to numerically analyse the performance of two bladed Savonius water turbine with deflector and to optimise the position of the deflector through flow physics and power curves studies at five different free stream water velocities from 0.3 m/s to 1.5 m/s. The computational models of the two bladed Savonius water turbine and the same with deflector are prepared and the numerical results are validated with the experimental results. It is observed that the deflector position of 101° with respect to the free-stream direction is the optimum position yielding maximum performance of the turbine. The maximum coefficient of power (Cp) obtained in this case is 0.54 at a free stream velocity 0.9 m/s and tip speed ratio 0.578. Moreover, the static and dynamic performances of the modified turbine are better than the simple two bladed Savonius water turbine.

Online publication date: Wed, 02-Nov-2016

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