Publication result detail

Instability of the swirling flows with/without cavitation

RUDOLF, P.; POCHYLÝ, F.; ČERMÁK, L.; ŠTEFAN, D.

Original Title

Instability of the swirling flows with/without cavitation

English Title

Instability of the swirling flows with/without cavitation

Type

Abstract

Original Abstract

Swirling flows are very susceptible to instabilities. Very often they are present in draft tubes of hydraulic turbines as so called vortex ropes resulting from spiral vortex breakdown. Moreover the situation can be complicated by cavitation within the core of the vortex. Paper presents various approaches, which were applied to enhance understanding of this problem. Numerical approach to study the linear stability including influence of cavitation is proposed and extensive nonlinear CFD simulations are described.

English abstract

Swirling flows are very susceptible to instabilities. Very often they are present in draft tubes of hydraulic turbines as so called vortex ropes resulting from spiral vortex breakdown. Moreover the situation can be complicated by cavitation within the core of the vortex. Paper presents various approaches, which were applied to enhance understanding of this problem. Numerical approach to study the linear stability including influence of cavitation is proposed and extensive nonlinear CFD simulations are described.

Keywords

swirling flow, cavitation, stability, vortex breakdown

Key words in English

swirling flow, cavitation, stability, vortex breakdown

Authors

RUDOLF, P.; POCHYLÝ, F.; ČERMÁK, L.; ŠTEFAN, D.

RIV year

2013

Released

14.05.2012

Publisher

Czech Society for Mechanics

Location

Praha

ISBN

978-80-86246-39-0

Book

Book of Extended Abstracts

Edition

1

Pages from

1123

Pages to

1124

Pages count

2

BibTex

@misc{BUT93824,
  author="Pavel {Rudolf} and František {Pochylý} and Libor {Čermák} and David {Štefan}",
  title="Instability of the swirling flows with/without cavitation",
  booktitle="Book of Extended Abstracts",
  year="2012",
  series="1",
  edition="1",
  pages="1123--1124",
  publisher="Czech Society for Mechanics",
  address="Praha",
  isbn="978-80-86246-39-0",
  note="Abstract"
}