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        Effect of in-phase type waviness in the walls of a confined Savonius rotor placed in a long channel

        J. Ramarajan,S. Jayavel 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.5

        Wind energy is one form of renewable energy that emits zero CO 2 to the environment. Wind power has enormous potential to access and produce energy from it. Savonius turbine is a vertical axis wind turbine (VAWT). The power coefficient (C p ) of the Savonius turbine is lesser than horizontal axis wind turbine (HAWT), but the Savonius turbine can extract energy from even low wind regions. However, HAWTs can produce wind energy only from higher wind velocities. Researchers have already reported improvement in the C p of the Savonius turbine due to confinement. In the present work, the waviness is introduced and the distance of waviness from the rotor has been studied. Two-dimensional numerical simulations were carried out using ANSYS Fluent 2019R3 solver with SST k-ω turbulence model. In the confined channel, compared to base case, an improvement of 27.22 % in C p has been attained for the proposed channel configuration with local waviness.

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