Numerical Analysis of Flow Fields for the Different Models of the Shrouded Savonius Rotor

Authors

Alsaied khalil Mahmoud, Department of Mechanical Power, Faculty of Engineering, Tanta UniversityFollow
Mohamed Mahgoub Bassuoni, Department of Mechanical Power, Faculty of Engineering, Tanta UniversityFollow
Mohamed Fawzy Obiaa, Faculty of engineering, Tanta universityFollow
Ahmed Mostafa Khaira, Department of Mechanical Power, Faculty of Engineering, Tanta UniversityFollow

Abstract

In this study, the effect of three different lengths (short, medium, and long) of flanged shrouded Savonius wind turbines is investigated three-dimensional (3-D) numerically by ANSYS-FLUENT. The 3-D numerical model of a simple rotor is validated by comparing the results with previous published experimental ones at the same operating conditions and geometry. The numerical and experimental results indicate a good agreement with each other when using the SST K-ω model with a time step size of 0.0025 s.The analysis of the numerical results of the three flanged shrouded models shows an enhancement of the torque coefficient at tip speed ratio 0.42 with a 40% increase and the power coefficient at tip speed ratio 0.5 with an 18% increase compared with the bare rotor at the same free stream velocity. However, the shroud is not effective on the performance of the rotor after a tip speed ratio of 0.7.

Recommended Citation

Mahmoud, Alsaied khalil; Bassuoni, Mohamed Mahgoub; Obiaa, Mohamed Fawzy; and Khaira, Ahmed Mostafa (2024) "Numerical Analysis of Flow Fields for the Different Models of the Shrouded Savonius Rotor," Journal of Engineering Research: Vol. 8: Iss. 1, Article 7.
Available at: https://digitalcommons.aaru.edu.jo/erjeng/vol8/iss1/7