Discussion: “Squeeze Film Dynamics of Two-Phase Seals: Part II—Turbulent Flow” (Yasuna, J. A., and Hughes, W. F., 1994, ASME J. Tribol., 116, pp. 479–487)

A previously developed dynamic model for two-phase face seals is extended to include turbulent flow. Thermal transients over the entire range of laminar and turbulent flow are considered for both parallel and tapered geometries. Inlet losses and choking are accounted for in the turbulent regime. Axial responses to perturbations from equilibrium are examined, and general criteria are discussed for predicting stable, unstable and bistable seal operation.

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Closure to “Discussion of ‘Squeeze Film Dynamics of Two-Phase Seals: Part II—Turbulent Flow’” (1994, ASME J. Tribol., 116, p. 487)

Journal of Tribology ◽

10.1115/1.2928870 ◽

1994 ◽

Vol 116 (3) ◽

pp. 487-488

Author(s):

J. A. Yasuna ◽

W. F. Hughes

Keyword(s):

Turbulent Flow ◽

Squeeze Film ◽

Two Phase

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LIMITATIONS OF THE STOCHASTIC APPROACH IN TWO-PHASE TURBULENT FLOW CALCULATIONS

Atomization and Sprays ◽

10.1615/atomizspr.v6.i2.50 ◽

1996 ◽

Vol 6 (2) ◽

pp. 211-225 ◽

Cited By ~ 3

Author(s):

Keh-Chin Chang ◽

Wen-Jing Wu ◽

Muh-Rong Wang

Keyword(s):

Turbulent Flow ◽

Stochastic Approach ◽

Two Phase

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Model of a turbulent flow of a two-phase liquid with an uneven distributed phase concentration in a horizontal pipe

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1047/1/012021 ◽

2021 ◽

Vol 1047 (1) ◽

pp. 012021

Author(s):

Kh Sh Ilhamov ◽

D Z Narzullaev ◽

Sh T Ilyasov ◽

B A Abdurakhmanov ◽

K K Shadmanov

Keyword(s):

Turbulent Flow ◽

Two Phase ◽

Horizontal Pipe ◽

Phase Concentration ◽

Phase Liquid

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Influence of different flow regimes on the performance characteristics of a four-pad hydrostatic squeeze film damper loaded between pads

Industrial Lubrication and Tribology ◽

10.1108/ilt-05-2018-0215 ◽

2019 ◽

Vol 71 (3) ◽

pp. 440-446

Author(s):

Amina Nemchi ◽

Ahmed Bouzidane ◽

Aboubakeur Benariba ◽

Hicham Aboshighiba

Keyword(s):

Turbulent Flow ◽

Load Capacity ◽

Flow Regimes ◽

Performance Characteristics ◽

Squeeze Film ◽

Eccentricity Ratio ◽

Flow Conditions ◽

Content Type ◽

Turbulent Flow Regime ◽

Squeeze Film Dampers

Purpose The purpose of this paper is to study the influence of different flow regimes on the dynamic characteristics of four-pad hydrostatic squeeze film dampers (SFDs) loaded between pads. Design/methodology/approach A numerical model based on Constantinescu’s turbulent lubrication theory using the finite difference method has been developed and presented to study the effect of eccentricity ratio on the performance characteristics of four-pad hydrostatic SFDs under different flow regimes. Findings It was found that the influence of turbulent flow on the dimensionless damping of four-pad hydrostatic SFDs appears to be essentially controlled by the eccentricity ratio. It was also found that the laminar flow presents higher values of load capacity compared to bearings operating under turbulent flow conditions. Originality/value In fact, the results obtained show that the journal bearing performances are significantly influenced by the turbulent flow regime. The study is expected to be useful to bearing designers.

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