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In this paper the problem of designing an output device for dynamic pumps operating at a high fluid viscosity on the example of a disk pump was considered. The main objective of the study was to increase the pump efficiency by optimizing the geometry of the wet part of its volute. The dependences of the efficiency on the geometrical parameters of the output device estimated section were obtained. The results of the study are represented in a form of graphs and scalar field distributions.

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The guide vane of a centrifugal multistage pump mostly determines the hydraulic efficiency of the pump and as a consequence the optimal mode of its operation. In order to increase the pump efficiency, the radial channel guide vane has been optimized. Three geometrical parameters and the number of channels of the guide vane were selected as optimization parameters. Hydraulic efficiency was chosen as a criterion. 128 computational models were obtained by the method of automated parametrized construction. The efficiency parameters were obtained via hydrodynamic modeling. As a result, a significant increase in the pump efficiency was achieved.

This article is devoted to the model of a borehole centrifugal pump developed at the Department of Hydraulics of Bauman Moscow State Technical University. A universal layout has been developed for testing the stages of pumps of this type in a certain range of parameters. The article describes the mathematical model used. A comparison of numerical and field experiments is given. A problem has been identified when comparing their results.