Publication detail

Energy transformation and flow topology in an elbow draft tube

ŠTEFAN, D. RUDOLF, P. SKOTÁK, A. MOTYČÁK, L.

Original Title

Energy transformation and flow topology in an elbow draft tube

Type

journal article - other

Language

English

Original Abstract

Paper presents a computational study of energy transformation in two geometrical configurations of Kaplan turbine elbow draft tube. Pressure recovery, hydraulic efficiency and loss coefficient are evaluated for a series of flow rates and swirl numbers corresponding to operating regimes of the turbine. These integral characteristics are then correlated with local flow field properties identified by extraction of topological features. Main focus is to find the reasons for hydraulic efficiency drop of the elbow draft tube.

Keywords

draft tube, efficiency, pressure recovery, flow topology

Authors

ŠTEFAN, D.; RUDOLF, P.; SKOTÁK, A.; MOTYČÁK, L.

RIV year

2012

Released

1. 6. 2012

Publisher

University of West Bohemia

Location

Plzeň

ISBN

1802-680X

Periodical

Applied andComputational Mechanics

Year of study

6

Number

1

State

Czech Republic

Pages from

93

Pages to

106

Pages count

14

URL

http://www.kme.zcu.cz/acm/index.php/acm/article/view/173

Full text in the Digital Library

http://hdl.handle.net/11012/70919

BibTex

@article{BUT93836,
  author="David {Štefan} and Pavel {Rudolf} and Aleš {Skoták} and Lukáš {Motyčák}",
  title="Energy transformation and flow topology in an elbow draft tube",
  journal="Applied andComputational Mechanics",
  year="2012",
  volume="6",
  number="1",
  pages="93--106",
  issn="1802-680X",
  url="http://www.kme.zcu.cz/acm/index.php/acm/article/view/173"
}