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

conference paper

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 reason is to find the reasons for hydraulic efficiency drop of the elbow draft tube.

Keywords

draft tube, hydraulic efficiency, pressure recovery, flow topology

Authors

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

RIV year

2011

Released

7. 11. 2011

Publisher

ZČU - Plzeň

Location

Plzeň

ISBN

978-80-261-0027-0

Book

COMPUTATIONAL MECHANICS 2011, EXTENDED ABSTRACTS

Pages from

55

Pages to

56

Pages count

2

BibTex

@inproceedings{BUT75629,
  author="David {Štefan} and Pavel {Rudolf} and Aleš {Skoták} and Lukáš {Motyčák}",
  title="Energy transformation and flow topology in an elbow draft tube",
  booktitle="COMPUTATIONAL MECHANICS 2011, EXTENDED ABSTRACTS",
  year="2011",
  pages="55--56",
  publisher="ZČU - Plzeň",
  address="Plzeň",
  isbn="978-80-261-0027-0"
}