Stepanyuk

In this paper the authors describe a technique of multi-criteria optimization of geometrical parameters of a retractor in the main NM oil pump. The optimization is based on the LP-tau search method; the test points are analyzed by the technique of numerical simulation of fluid flow inside the volute. An example of optimization of the volute of the NM3600-230 pump is presented. Minimization of head loss in the retractor and minimization of the radial load on the pump rotor were taken as optimization criteria. The variant of the flow part, which differed from the original one by smaller loss of the pressure head and significantly decreased load, was obtained as the result of optimization.