Особенности методики моделирования рабочего процесса насоса с гидроприводом первой ступени

Abstract

The authors show the technique for CFD-modeling of a powerful two-stage pump with the following main parameters: main rotor speed is 13,300 rpm, pressure head is more than 3,000 meters with mass flow of 250 kg/s. There are two highlights in this work in comparison with previous. The first one is how to choose the rotating speed of hydroturbine. The second one is the CFD-modeling of cavitation processes. The adequacy of CFD-model has been evaluated by comparing predicted characteristics of the pump with the experimental ones derived from the test rig. The differences has been amounted to less than 10%. The technique that has been obtained can be used in the future research for performance improving and efficiency increasing of pumps with hydraulic control of the low-pressure stage by CFDtools