학술논문

Mathematical modeling of low-frequency pressure fluctuations in hydroturbine ducts
Document Type
Original Paper
Source
Fluid Dynamics. September 2015 50(5):601-612
Subject
mathematical models
numerical simulation
pressure fluctuations
vortex precession
Francis hydroturbine
high-head hydroelectric stations
Language
English
ISSN
0015-4628
1573-8507
Abstract
The results of the modeling of unsteady three-dimensional flows in the hydroturbine ducts of two high-head hydroelectric stations are presented. The flow structure behind the turbine wheel is analyzed and its effect on the frequency and the intensity of unsteady processes in the duct is shown. The individual features and the general tendencies in the behavior of the fluctuation characteristics of both turbines are established.