Detail publikace

Spatio-Temporal Description of the Swirling Flow in Hydraulic Turbine

RUDOLF, P. ŠTEFAN, D. KLAS, R.

Originální název

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Highly swirling flow leaves runner of the hydraulic turbine, which is operated off the best efficiency point. Instability of the swirling flow results in so called vortex rope. Rotating vortex rope is a source of pressure pulsations, causes structural loads, vibrations and noise. Proper orthogonal decomposition (POD) provides a spatio-temporal description of the draft tube swirling flow and proves that only a very limited number of the flow eigenmodes is necessary to describe the flow dynamics. Construction of the reduced order model (ROM), which is derived by projection of Navier-Stokes equation onto POD basis forms a suitable state equation for the draft tube flow control. Paper presents review of POD application to draft tube flows and proposal of extension to ROM and closed loop flow control.

Klíčová slova

swirling flow, draft tube, proper orthogonal decomposition, reduced order model

Autoři

RUDOLF, P.; ŠTEFAN, D.; KLAS, R.

Rok RIV

2015

Vydáno

5. 5. 2015

Nakladatel

Springer Vieweg

Místo

Wiesbaden

ISSN

0043-0978

Periodikum

WASSERWIRTSCHAFT

Ročník

2015

Číslo

Stát

Spolková republika Německo

Strany od

Strany do

Strany počet

BibTex

@article{BUT114878,
  author="Pavel {Rudolf} and David {Štefan} and Roman {Klas}",
  title="Spatio-Temporal Description of the Swirling Flow in Hydraulic Turbine",
  journal="WASSERWIRTSCHAFT",
  year="2015",
  volume="2015",
  number="1",
  pages="18--22",
  doi="10.1007/s35147-015-0511-5",
  issn="0043-0978"
}