Determination of critical speeds of a centrifugal pump impeller in annular seals

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

Abstrakty

EN

The paper deals with combined transverse and angular vibrations of a single-disc impeller in annular seals. The formulated equations of vibrations include additional (i.e., inertia, damping, potential, gyroscopic and circular) hydrodynamic forces and moments occurring in clearances of non-contact seals. The study involved performing digital calculations to determine the natural frequencies in two models of the rotor, both for constant pressure drops in seals and for a square relationship between the pressure drops and the rotational frequency of the impeller. It was also necessary to estimate the influence of the conicity of the annular clearance gaps in non-contacting seals on the natural and critical frequencies of the rotor.

Słowa kluczowe

EN

dynamics; rotor system; annular seal

PL

dynamika; uszczelka pierścieniowa

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2012
• Tom: Vol. 17, no. 3
• Strony: 873--883
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Kundera C.

autor

Marcinkowski W. A.

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

Bibliografia

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