Use of Methods of Mathematical Modeling to Analyze Low-Frequency Pressure Pulsations in the Continuous Run of High-Head HPP

• Published in: Power technology and engineering Vol. 49; no. 2; pp. 90 - 97
• Main Authors: Minakov, A. V., Platonov, D. V., Dekterev, A. A., Sentyabov, A. V., Pylev, I. M., Zakharov, A. V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-07-2015
• Subjects: Electrical Machines and Networks; Energy; Energy Systems; Foundations; Geoengineering; Hydraulics; Power Electronics; Renewable and Green Energy; CFD; pressure pulsations; mathematical model; hydraulic turbine; turbulence; precessing vortex core
• ISSN: 1570-145X; 1570-1468
• DOI: 10.1007/s10749-015-0580-8

Anumerical procedure is presented for analysis of pressure pulsations in hydraulic turbines. Results of its use for description of unsteady turbulent flow in the continuous run of a hydraulic turbine are presented. The numerical method is adapted for results of modeling of turbulent unsteady flow in the continuous rune of a high-head HPP. The structure of the flow beyond the impeller and its effect on the intensity of unsteady processes are examined. Results of the analysis are compared with full-scale data. Good agreement is obtained between the computed and experimental results.