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

Povzetek

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.

Ključne besede

črpalne turbine;oscilacije;vodilna lopatica;torzijske vibracije;

Podatki

Jezik:	Angleški jezik
Leto izida:	1997
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FS - Fakulteta za strojništvo
UDK:	621.224.7
COBISS:	2686742
ISSN:	1070-9622
Št. ogledov:	803
Št. prenosov:	341
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	črpalne turbine;oscilacije;vodilna lopatica;torzijske vibracije;
URN:	URN:SI:UM:
Vrsta dela (COBISS):	Znanstveno delo
Strani:	str. 153-162
Letnik:	ǂVol. ǂ4
Zvezek:	ǂNo. ǂ3
Čas izdaje:	1997
DOI:	10.3233/SAV-1997-4302
ID:	10842811