Abstract: | Papers present a critical analyse of flow spectrum through work machines with lateral channel. We present theoretical results obtained by flow modelling in compressible fluid flow using Fluent application, also in incompressible fluids, using Taylor method for finite differences. The flowing spectres analysed prouve that the efiiciency of the machines increase at the increase of the number of the impeller blades and by decease by ratio of lateral channel width and thouse of the blade, or by the decrease of radial gap from the blades and the cassing. On remark that the kinetic energy increased by the vortex intensity, suitable by a single fluid passing through impeller and cassing, is small because the pressure energy at the discharge of the hydraulic machines, named MCL cannot be changed. |