Torsional vibrations at guide-vane shaft of pump-turbine model

Abstract

This article focuses on the problem of guide-vane vibrations of reversible pump-turbines, especially, in the pump mode. These vibrations are transmitted to the guide-vane shaft torque. The guide-vane vibrations are caused by the impeller exit flow, which has a turbulent and partly nondeterministic property. Experimentally determined flow velocities at the impeller exit are given. The mathematical models for theoretical torsional vibration prediction formulated using linear and nonlinear differential equations are presented. The results of theoretical calculations are compared with measurements results. The possibility of transferring the parameters from the model to the prototype is discussed.

Keywords

črpalne turbine;oscilacije;vodilna lopatica;torzijske vibracije;

Data

Language:	English
Year of publishing:	1997
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	621.224.7
COBISS:	2686742
ISSN:	1070-9622
Views:	803
Downloads:	341
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	črpalne turbine;oscilacije;vodilna lopatica;torzijske vibracije;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 153-162
Volume:	ǂVol. ǂ4
Issue:	ǂNo. ǂ3
Chronology:	1997
DOI:	10.3233/SAV-1997-4302
ID:	10842811