Study of dynamic vortex structures of an incompressible liquid
Loading...
Date
2024-07-04
Authors
Pochylý, František
Štefan, David
Fialová, Simona
0000-0001-6408-1960Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
EPJ Web of Conferences
Altmetrics
Abstract
The study of non-stationary vortex structures arising at the inlet of centrifugal pumps and at the outlet of turbines of the Kaplan and Francis type is the subject of the presented paper. Specific attention will be paid to spatial vortices, characterized by curvature and twist. Spiral vortices will also be monitored as sources of spatial vortex motion. Their core will be expressed by a mathematical model in curvilinear coordinates. Helicity, which indicates the degree of vorticity, will also be determined by computational simulation of turbulent motion. The swirling motion will be induced by a specially designed diffuser-shaped vortex generator, simulating the inlet to the turbine draft tube. A significant result of the study of vortex structures will be the dependence of the twist of the streamline in relation to the Hessian matrix, expressed as a function of the pressure function. This dependence will be significant for the optimization of the hydraulic machines.
Description
Keywords
Citation
EPJ Web of Conferences. 2024, vol. 299, issue 1, p. 1-6.
https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01031/epjconf_efm2024_01031.html
https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01031/epjconf_efm2024_01031.html
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en