Open AccessThe numerical simulation of the rope vortex creation and the possibilities of its control
Author(s) -
Piotr Szulc,
A. Machalski,
Janusz Skrzypacz,
Dominik Błoński
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1741/1/012020
Subject(s) - rope , vortex , hydraulic turbines , turbine , francis turbine , flow (mathematics) , mechanics , reduction (mathematics) , marine engineering , mechanical engineering , engineering , physics , mathematics , geometry
The rope vortex is a phenomena which can be observed in many hydraulic machines, especially turbines and pump–turbines. Its creation is based on a non uniform velocity profile characterized by high value of the circumferential component. This phenomena limits the range of operating conditions, which results in reduction of the energy production. The article presents the flow analysis of the hydraulic Francis turbine, where the rope vortex was observed. The structure of the vortex was identify and some solutions were analysed to prevent or reduce the size of multiphase flow.