Publication detail

Stability of the Steady Flow in Rotationally Symmetrical Domain

POCHYLÝ, F. RUDOLF, P. HABÁN, V. KOUTNÍK, J. KRÜGER, K.

Original Title

Stability of the Steady Flow in Rotationally Symmetrical Domain

Type

journal article - other

Language

English

Original Abstract

Perturbation analysis with a linear approach of the flow in cylindrical domain was carried out in this paper. Analysis is based on Euler equations for inviscid fluid and continuity equation in rotating frame of reference. Eigen mode shapes of velocities visualize the flow patterns and eigen mode shapes of the cavitating vortex rope show origin of the elliptical vortex rope cross-section. Investigation confirms that boundary conditions have dominant effect on steady flow stability. Results indicate that careful design of the runner and the draft tube can lead to reduction of the instability consequences or to shifting the instability to different operational ranges.

Keywords

Swirl, stability, rotationally symmetrical, eigen value, cylinder, draft tube, elliptical

Authors

POCHYLÝ, F.; RUDOLF, P.; HABÁN, V.; KOUTNÍK, J.; KRÜGER, K.

RIV year

2007

Released

24. 10. 2007

Publisher

Politechnica University of Timisoara

Location

Timisoara

ISBN

1224-6077

Periodical

Scientific Bulletin of the "Politehnica" University of Timisoara

Year of study

52

Number

6

State

Romania

Pages from

93

Pages to

100

Pages count

8

BibTex

@article{BUT43906,
  author="František {Pochylý} and Pavel {Rudolf} and Vladimír {Habán} and Jiří {Koutník} and Klaus {Krüger}",
  title="Stability of the Steady Flow in Rotationally Symmetrical Domain",
  journal="Scientific Bulletin of the {"}Politehnica{"} University of Timisoara",
  year="2007",
  volume="52",
  number="6",
  pages="93--100",
  issn="1224-6077"
}