Sk. Baheti et Rg. Kirk, FINITE-ELEMENT THERMOHYDRODYNAMIC ANALYSIS OF 2-LOBE OIL SEALS USED IN HIGH-PRESSURE CENTRIFUGAL COMPRESSORS, Tribology transactions, 41(4), 1998, pp. 554-562
This paper presents a finite element solution of the nonlinear and cou
pled hydrodynamic and thermal equations for pressure and temperature d
istributions in two-lobe oil seals. The pressure distribution is integ
rated to obtain hydrodynamic forces. TFR perturbation technique is use
d to determine the static and dynamic characteristics of the oil seal.
Eigenvalue analysis is performed for the linear stability analysis of
the compressor rotor Results in terms of pressure and temperature dis
tributions, stiffness and damping characteristics, leakage, growth fac
tors and damped natural frequencies are presented for both cylindrical
and two-lobe oil seals operating at different eccentricities.