The effect of annular seal parameters on the dynamics of a rotor system

• Autorzy: Kundera C. , Marcinkowski W. A.
• Języki publikacji: EN

Abstrakty

EN

The paper analyzes the influence of annular seal parameters on the critical angular velocity and the dynamic stability of rotor system consisting of a shaft and a symmetrical impeller rotating in two seals. The equations of motion of the rotor system were formulated. The special model developed to describe the seal fluid forces takes into account not only the stiffness and damping forces but also the inertial, gyroscopic and circulatory forces. The calculation results show that the clearance shape has a considerable effect on the critical velocity of the rotor. The greater the pressure drop in the seal, the greater the influence of the clearance conicity.

Słowa kluczowe

EN

dynamics; rotor system; annular seal

PL

dynamika; system wirnika; uszczelka pierścieniowa

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2010
• Tom: Vol. 15, no 3
• Strony: 719--730
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Kundera C.

autor

Marcinkowski W. A.

• Kielce University of Technology 25-314 Kielce, Al. 1000-lecia PP 7, POLAND,

Bibliografia

• Cheng M., Meng G. and Jing J. (2006): Non-linear dynamics of rotor-bearing-seal system. – Archive of Applied Mechanics, vol.76, pp.215-227.
• Genta G. (2005): Dynamics of Rotating Systems. – New York: Springer.
• Kiciński J. (2005): Dynamics of rotors and journal bearings. – Editorial of IMP PAN, Gdańsk, vol.529, pp. (in Polish).
• Lomakin A. (1958): Calculation of critical speed and securing the dynamic stability of the rotor of hydraulic high pressure machines with reference to forces arising in the seal gaps. – Energomashinostroenie, vol.4, No.4, pp.1-5.
• Marcinkowski W. and Kundera Cz. (2008): Design theory of noncontacting seals. – Editorial of the Kielce University of Technology, Kielce, vol.443, pp. (in Polish).
• Marcinkowski W.A. and Worona P.N. (1987): Pumps of atomic power stations. – Energozatomizdat, vol.256, pp. (in Russian).
• Muszynska A. (1988): Improvements in lightly loaded rotor/bearing and rotor/seal models. – Journal of Vibration, Acoustics, Stress and Reliability in Design, vol.110, No.2, pp.129–136.
• Muszynska A. and Bently, D.E. (1990): Frequency-swept rotating input perturbation techniques and identification of the fluid force models in rotor/bearing/seal systems and fluid handling machines. – Journal of Sound and Vibration, vol.143, No.1, pp.103-124.