“…Generally, the study of hydraulic resistances considers both the constructive/geometrical [ 1 – 6 , 9 ] and functional (the fluid motion) aspects [ 3 – 5 , 7 , 8 , 10 – 12 ]. Thus, theoretical and experimental investigations explore the geometry of the hydraulic resistances, the optimization of their geometry, and the maximization of the control cross section [ 3 , 6 , 8 , 10 , 12 ]. A few theoretical and experimental studies approach the important problem of the cavitation phenomenon in hydraulic resistances [ 1 , 2 , 4 ], and other studies analyze the flow of viscous fluids through the hydraulic resistance as well as the pressure, velocity and hydrodynamic force distributions, and nature of the flow regime [ 3 , 5 , 6 , 8 , 10 , 11 ].…”