Detail publikačního výsledku

Construction of a reduced-order dynamic model for prospective swirling flow control in hydraulic turbine draft tube

RUDOLF, P.; URBAN, O.; ŠTEFAN, D.

Originální název

Construction of a reduced-order dynamic model for prospective swirling flow control in hydraulic turbine draft tube

Anglický název

Construction of a reduced-order dynamic model for prospective swirling flow control in hydraulic turbine draft tube

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Vortex rope in Francis turbine draft tubes poses serious problems. Emphasis on operation of the turbines in wide operating range, quite far from the design point, is a challenge for both the turbine designers and power plant owners. While flow control becomes popular in aircraft and automotive industry, it is still feared in turbomachinery. Present paper brings results of investigations aimed on construction of a reduced order model, which describes dynamics of the swirling flow in the draft tube. First step is assesing the dominant modes of the flow, second step is projection of those modes onto a transport equation. Final set of ordinary differential equations is a relatively simple model of the time evolution of the flow dynamics, which is basis for the flow control aiming on mitigation of the instabilities (e.g. vortex rope).

Anglický abstrakt

Vortex rope in Francis turbine draft tubes poses serious problems. Emphasis on operation of the turbines in wide operating range, quite far from the design point, is a challenge for both the turbine designers and power plant owners. While flow control becomes popular in aircraft and automotive industry, it is still feared in turbomachinery. Present paper brings results of investigations aimed on construction of a reduced order model, which describes dynamics of the swirling flow in the draft tube. First step is assesing the dominant modes of the flow, second step is projection of those modes onto a transport equation. Final set of ordinary differential equations is a relatively simple model of the time evolution of the flow dynamics, which is basis for the flow control aiming on mitigation of the instabilities (e.g. vortex rope).

Klíčová slova

hydraulic turbine, swirling flow, vortex

Klíčová slova v angličtině

hydraulic turbine, swirling flow, vortex

Autoři

RUDOLF, P.; URBAN, O.; ŠTEFAN, D.

Rok RIV

2019

Vydáno

28.03.2019

Kniha

IOP Conference Series: Earth and Environmental Science

ISSN

1755-1315

Periodikum

IOP Conference Series: Earth and Environmental Science

Svazek

240

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

10

Strany počet

10

URL

https://iopscience.iop.org/article/10.1088/1755-1315/240/2/022065

BibTex

@inproceedings{BUT156417,
  author="Pavel {Rudolf} and Ondřej {Urban} and David {Štefan}",
  title="Construction of a reduced-order dynamic model for prospective swirling flow control in hydraulic turbine draft tube",
  booktitle="IOP Conference Series: Earth and Environmental Science",
  year="2019",
  journal="IOP Conference Series: Earth and Environmental Science",
  volume="240",
  pages="1--10",
  doi="10.1088/1755-1315/240/2/022065",
  issn="1755-1315",
  url="https://iopscience.iop.org/article/10.1088/1755-1315/240/2/022065"
}