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Keywords: turbulence
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. August 2023, 145(8): 084101.
Paper No: TRIB-22-1420
Published Online: May 12, 2023
...Tianyou Yang; Jianlin Cai; Liwu Wang; Dongxing Tang; Shouan Chen; Jiaxu Wang The purpose of this study is to assess the role of turbulence on the lubrication performances of coupled journal-thrust water-lubricated bearing with micro grooves using a numerical model. The results of the simulation...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. September 2020, 142(9): 091802.
Paper No: TRIB-19-1248
Published Online: April 21, 2020
...Yingze Jin; Xiaoyang Yuan To improve the efficiency in nonlinear dynamic calculation of finite-length tilting-pad journal bearings (TPJBs) under dynamic loads, an analytical method for hydrodynamic bearing forces, which considers the turbulence effect, is proposed using the method of separation...
Journal Articles
Publisher: ASME
Article Type: Hydrodynamic Lubrication
J. Tribol. July 2012, 134(3): 031704.
Published Online: June 19, 2012
... Reynolds number lubrication. The incompressible continuity equation and Navier-Stokes equations, including inertia terms, are simplified using an averaged velocity approach to obtain an extended form of short bearing Reynolds equation which applies to both laminar and turbulent flows. A full kinematic...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2010, 132(4): 041704.
Published Online: October 7, 2010
...E. Rajasekhar Nicodemus; Satish C. Sharma The objective of the present paper is to study analytically the influence of wear on the performance of a capillary-compensated, four-pocket, hybrid journal bearing system operating in a turbulent regime by considering various geometric shapes of recess...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2009, 131(3): 032202.
Published Online: June 1, 2009
...Noël Brunetière; Bernard Tournerie The aim of this paper is to present a turbulence model that allows turbulent flows between smooth and/or rough walls to be dealt with. After analyzing available literature data, an improvement of the Elrod, Ng, and Pan turbulence model is proposed, taking...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. October 2007, 129(4): 876–886.
Published Online: May 30, 2007
...Noël Brunetière; Bernard Tournerie The aim of this paper is to present a numerical model to compute laminar, turbulent, and transitional incompressible fluid flows in thin lubricant films where inertia effects cannot be neglected. For this purpose, an averaged inertia method is used. A numerical...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2007, 129(2): 384–390.
Published Online: December 11, 2006
.... It was found that the airflow just after entering the bearing clearance becomes turbulent in a region where relatively rapid pressure recovery occurs and that no shock wave is generated at the boundary between subsonic and supersonic flow. In addition, the numerical results presented show good agreement...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2007, 129(1): 120–128.
Published Online: June 27, 2006
...Zhaogao Luan; M. M. Khonsari Turbulent flow inside the seal chamber of a pump operating at high Reynolds number is investigated. The K − ε turbulence model posed in cylindrical coordinates was applied for this purpose. Simulations are performed using the fractional approach method. The results...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2006, 128(3): 566–574.
Published Online: March 21, 2006
... is demonstrated. 19 12 2005 21 03 2006 hydrostatics film flow liquid films external flows discs (structures) lubrication elastodynamics hydrodynamics seals (stoppers) inertia effect turbulence hydrostatic seal mechanical seal TEHD lubrication In fluid film lubrication...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2004, 126(4): 781–787.
Published Online: November 9, 2004
...David L. Rhode, Professor; Richard G. Adams A fully compressible , two-dimensional axisymmetric, turbulent Navier-Stokes code using the finite-volume discretization approach was utilized to obtain an enhanced understanding of the effects of rub-grooves in straight-through , abradable labyrinth...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2003, 125(3): 617–627.
Published Online: June 19, 2003
... induces a progressively turbulent radial flow. In this case, it is shown that neither thermal effects nor fluid flow regime significantly affect seal behavior. The same trends have been observed while varying the sealed fluid, which is consistent with varying initial viscosity. Here, only...
Journal Articles
Publisher: ASME
Article Type: Technical Notes
J. Tribol. April 2003, 125(2): 451–456.
Published Online: March 19, 2003
... for Cryogenic Applications ,” AIAA Journal of Propulsion and Power , 11 , pp. 964 – 972 . Yang , Z. , San Andre´s , L. , and Childs , D. , 1995 , “ Thermohydrodynamic Analysis of Process Liquid Hydrostatic Bearings in Turbulent Regime ,” ASME J. Appl. Mech. , 62 , pp. 674 – 684...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2003, 125(2): 301–308.
Published Online: March 19, 2003
...Mathieu Helene; Mihai Arghir; Jean Frene The present work investigates the flow in the feeding recess of a hybrid journal bearing. Numerical integration of the complete Navier-Stokes equations was performed with an appropriate turbulence model. Of primary concern is the pressure field...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2002, 124(1): 212–219.
Published Online: May 3, 2001
... 03 May 2001 machine bearings rotors turbulence flow tribology Cryogenic turbo pumps and environmentally friendly rotating machinery implement process fluid-externally pressurized bearings and damping seals as rotor support elements. Compact-low count part turbo pumps operate sub...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2001, 123(1): 101–107.
Published Online: September 26, 2000
... between theory and experiment is shown for Re < 100 , but a significant discrepancy (most likely due to turbulence) is observed for 300 < Re < 1500 . 1 The hydrodynamic pressure predicted by the modified Reynolds equation for laminar flows between rough surfaces agrees with the measured...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2001, 123(1): 94–100.
Published Online: September 26, 2000
... and turbulent regimes using the classical Reynolds equation of lubrication and a modified Reynolds equation for turbulent flows, respectively. The applicability of the proposed models is discussed and verified experimentally in terms of the developed hydrodynamic pressure. It is found that the classical...
Journal Articles