... reserved. Hydrodynamic and performance of low power turbines: conception, modelling and experimental tests Mariana. Simão, Helena M. Ramos Civil Engineering Department and CEHIDRO, Instituto ... (d) and (e) with Graphic 3 (a), (c) and (d)). The numerical simulation was confined to hydrodynamic studies and, therefore, some of the real effects could not be modelled, such as friction and ... test and simulation: PD turbine; tubular propeller with 5 blades; and with 4 blades Graphic 5. Comparisons between experimental test and simulation: propeller with volute at upstream; and...