A Review on Computational Fluid Dynamics Applications in the Design and Optimization of Crossflow Hydro Turbines

Figure 5

Air-water volume fraction and velocity fields inside the Banki turbine at two speeds: (a) n = 50 rpm and (b) n = 125 rpm. The background color indicates the air-water volume fraction (blue for water, red for air). The legend shows velocity values [15] (copyright (2011), with permission under Creative Commons Attribution 4.0 International License).