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The Effect of Along Blade Discretization on the Savonius hydrokinetic Turbine Performance by Using Myring Formula for n equal with 1
Priyo Agus Setiawan, Nopem Ariwiyono, Rini Indarti, Subagio Soim, Muhammad Shah, Triyogi Yuwono, Wawan Aries Widodo

Shipbuilding Institute of Polytechnic Surabaya, Jalan Teknik Kimia Kampus ITS Keputih-Sukolilo Surabaya, Indonesia, 60111
Mechanical Engineering Department, Sepuluh Nopember Institute of Technology, Mechanical Engineering Department, Kampus ITS Surabaya, Indonesia, 60111
Center of Excellence in Automotive Control & System, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia, 60111


Abstract

The hydrokinetic turbine is one of the renewable energy without generating emission impacted on environmental. In this work, the numerical simulation is used to investigate the influence of discretization along the blade surface towards the amount of the torque coefficient and power coefficient. This work will be done on Savonius hydrokinetic turbine numerically by using the Myring formula for n equal with 1 having the performance better than the conventional blade. This work will compare the performance among the blade discretization. Firstly, the numerical will be done the validation with experimental results at TSR of 0.8 and velocity of fluid kept constant at 0.22 m/s. Problem-solving uses Unsteady RANS with moving mesh for the rotating body. The turbulence model uses the Realizable k-epsilon (RKE) enhanced wall treatment with the discretization varied 800 and 1600. The layer number is 20 layers by varying the first layer on the blade surface of 1 and 1.2. This work focuses to obtain the torque coefficient and power coefficient. The results indicate that the increase of discretization on the surface of the blade has improved the accuracy results of the turbine performance.

Keywords: Savonius hydrokinetic turbine, myring formula, discretization, Realizable k-epsilon, turbine performance

Topic: Renewable Energy

Link: https://ifory.id/abstract/TpjgzEbauRUh

Conference: International Conference on Renewable Energy (ICORE 2019)

Plain Format | Corresponding Author (Priyo Agus Setiawan)

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