Thermal analysis of locked multi-ring oil seals Academic Article uri icon


  • A thermal bulk-flow analysis for the laminar/turbulent flow in short-length locked multi-ring oil seals is presented. The model accounts for fluid inertia and viscous loss effects at the inlet of the first land in a multi-land oil seal package. The continuity, momentum and energy equations are solved numerically in the seal lands by means of a finite volume method. A radial heat transfer model is used for energy transfer to the seal bushing. Predictions show that multi-land seals have consistently smaller load capacities, stiffness and direct damping coefficients than single-land seals. Temperature increments up to three times the inlet temperature are determined for the seal cases analysed. Comparison between the present model and an isothermal analysis based on an average fluid temperature shows that the latter method overpredicts the cross-coupled stiffness and direct damping coefficients. © 1994.

author list (cited authors)

  • Semanate, J. E., & San Andres, L. A.

citation count

  • 6

complete list of authors

  • Semanate, JE||San Andres, LA

publication date

  • June 1994