Flow analysis of the vertical axis Savonius current turbine (VASCT) performance for Myring blade n = 1 using CFD aproach

Abstract

The flow visualization of vertical axis Savonius current turbine has been investigated numerically by using Myring formula n of 1. Computational Fluid Dynamics or CFD approach has been carried out by using Gambit for geometry and ANSYS 17.0 running to solve the incompressible U-RANS. This work has been done by comparing the performance between Myring and conventional Savonius. The y+ in the first layer of blade surface has been made between 30 and 100 with y+ in about 52. The turbulence model will be chosen the Realizable k-epsilon (RKE) for this turbine case. The numerical obtain the torque and power coefficient and the power coefficient called the turbine performance. The numerical simulation has been validated by experimental results towards torque coefficient. The results have indicated that the Myring formula n = 1 have the best performance compared this one by decreasing the pressure in attached flow area.