Publication detail

Energy transformation and flow topology in an elbow draft tube

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

English title

Energy transformation and flow topology in an elbow draft tube

Type

Peer-reviewed article not indexed in WoS or Scopus

Language

en

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 in English

draft tube, efficiency, pressure recovery, flow topology

Released

2012-06-01

Publisher

University of West Bohemia

Location

Plzeň

ISSN

1802-680X

Journal

Applied andComputational Mechanics

Volume

6

Number

1

Pages from–to

93–106

Pages count

14

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"
}