Mohd Halmy , M. S. ., D. H. Didane, L. O. . Afolabi, and S. . Al-Alimi. “Computational Fluid Dynamics (CFD) Study on the Effect of the Number of Blades on the Performance of Double-Stage Savonius Rotor”. CFD Letters, vol. 13, no. 4, Apr. 2021, pp. 1-10, doi:10.37934/cfdl.13.4.110.