Abstract
Currently, among the most popular computational fluid dynamics software packages are commercial CFD packages – ANSYS CFX, ANSYS Fluent, STAR-CCM+ and several others. In contrast to the above-mentioned commercial CFD packages, there is an OpenFOAM, a non-commercial, freely distributed, integrated platform for numerical modeling of solid-state mechanics tasks (including CFD tasks), and it is becoming more and more popular. In addition to being a non-commercial package, OpenFOAM also has open-source code, which allows users to write their own algorithms for solving highly specialized tasks. A comparison of ANSYS and OpenFOAM in the application to CFD problems of incompressible turbulent flow in this article is given by the example of jet pump calculation, which was tested in the Laboratory of Hydraulic Machinery of Peter the Great St.Petersburg Polytechnic University.
Highlights
Jet pump is a hydraulic machine, where mixing of the flows is followed by the transportation of the finished product to the consumer
The ratio of the flow rates of working and injected flows in the jet pump is determined by the design and the operating parameters
Flow rates ratio will remain constant in case design and operating parameters are unchanged
Summary
Jet pump is a hydraulic machine, where mixing of the flows is followed by the transportation of the finished product to the consumer. The ratio of the flow rates of working and injected flows in the jet pump is determined by the design (geometric dimensions of the flow part) and the operating (heads in suction and discharge control sections of the pump) parameters. Flow rates ratio will remain constant in case design and operating parameters are unchanged. The working process of the device is accompanied by energy exchange and mutual mixing of flows due to turbulent flow regime and subsequent alignment of velocity and pressure profiles. This results in the formation of mixture, containing required composition and energy, sufficient for subsequent transfer to the consumer
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