Some non contacting mechanical face seals are running near the laminar boundary flow limit. A modification of operating conditions leads to a non laminar fluid flow in the seal interface while inertia forces remain negligible. A numerical model has been developed to determine pressure and velocity fields in the sealing dam for laminar to turbulent regime. The turbulent viscosity determination is based on the Elrod and Ng model. Evolutions of seal characteristics (opening force, friction torque, leakage rate…) and fluid film dynamic coefficients versus running conditions are presented. Numerical results show that great variations appear in the transition to turbulence.
Influence of Fluid Flow Regime on Performances of Non-Contacting Liquid Face Seals
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division February 27, 2001; revised manuscript received August 7, 2001. Associate Editor: S. Wu.
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Brunetie`re, N., Tournerie , B., and Fre^ne, J. (May 31, 2002). "Influence of Fluid Flow Regime on Performances of Non-Contacting Liquid Face Seals ." ASME. J. Tribol. July 2002; 124(3): 515–523. https://doi.org/10.1115/1.1456453
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