TY - JOUR N2 - The considerations presented in the paper relate to one of the most intriguing phenomena, which is the development of oil whirls and oil whips in rotors with journal bearings. This effect is sometimes referred to as flutter, as its origin is in some relation to self-exciting vibrations of the system. Despite the fact that the flutter has been an object of investigation in numerous research centres all over the world, its nature has not been sufficiently recognized yet. The present paper delivers a description of particular phases of development of the hydrodynamic instability and proposes diagnostic determinants for this state. The object of investigations also included bearings with hybrid lubrication and siphon pockets in the oil gaps. The answer has been received to the question whether the self-exciting vibrations in rotating machines can be avoided, or reduced by means of additional oil supply having the form of siphon oil. L1 - http://journals.pan.pl/Content/111823/PDF/(52-3)195.pdf L2 - http://journals.pan.pl/Content/111823 PY - 2004 IS - No 3 EP - 207 KW - flutter KW - journal bearings KW - hydrodynamic instability KW - rotor dynamics A1 - Kiciński, J. VL - vol. 52 DA - 2004 T1 - The flutter effect in rotating machines SP - 195 UR - http://journals.pan.pl/dlibra/publication/edition/111823 T2 - Bulletin of the Polish Academy of Sciences Technical Sciences ER -