Approach of errors towards constant asymptotic values is determined by high flow turbulization degree, due to which the impact of rotor driving and retarding forces reaches equilibrium and liquid leakages further increase proportionally to total flow rate.
This is a consequence of flow turbulization in the meter passage, though liquid viscosity influence on leakages through the gaps remains.
This means that after the flow reaches high turbulization degree, the flow in the gaps becomes turbulent and the equilibrium of the rotor's driving and retarding forces prevails.
The recommended methods of calculation either refer to turbulent flows of considerable depth or are based on the assumptions of turbulization of laminar flows by the rain drops.
As can be observed, the rain drops had caused turbulization of the main flow, which remained laminar.
It has been found that strong effect of surface roughness still does not lead to flow turbulization.
Processes in the working zone of this apparatus involve a combination of various hydrodynamic phenomena, including high-gradient flow in the gap between rotating and immobile elements, intense turbulization
, pump effects, complicated velocity fields, vortex formation, cavitation and pulsation due to variations of the by-pass flow cross section, etc.
It consists of additional turbulization
of gaseous medium which gives higher kinetic energy to the particles in the gas flow.