... thrust bearing eccentric load oil cavity shapes lubrication performance fluid film lubrication hydrodynamic lubrication thrust bearings viscosity Multi-pad structures and separated friction pairs of the static and dynamic thrust bearing provide low friction and operational stability under...

... 09 04 2024 06 06 2024 Graphical Abstract Figure water lubrication secondary lubricating medium oil supply setting oil supply rate CFD simulation hydrodynamic lubrication journal bearings lubricants mixed lubrication viscosity Water has never been ruled out...

... . 05 02 2023 15 06 2023 15 06 2023 29 08 2023 gearbox churning losses torque measurements experiments CFD lattice-Boltzmann method oil splashing high-speed visualization flow visualization fluid friction gears viscosity VINNOVA 10.13039/501100001858...

...Anupam Bhandari The viscosity of ferrofluid has a vital role in liquid sealing of the hard disk drives, biomedical applications as drug delivery, hyperthermia, and magnetic resonance imaging. The theoretical expressions for ferrofluid viscosity and its limitation are presented in detail...

... 2023 grease lubrication rheology seals viscosity Science and Engineering Research Board 10.13039/501100001843 EMR/2017/03440 Magnetorheological grease (MRG) comes under the category of smart materials which is capable of reversibly altering its rheology under...

... ribology . 25 07 2022 09 10 2022 12 10 2022 11 11 2022 multiwall carbon nanotubes fumed silica MR fluids yield stress MR disc brake torque behavior brakes contact area fluid friction viscosity Science and Engineering Research Board 10.13039/501100001843...

...–structure interaction cavitation asperity contact coupled computing cavitation fluid film lubrication hydrodynamic lubrication surface roughness and asperities thermoelastohydrodynamic lubrication viscosity There is a growing need for further improvements to the efficiency of internal...

...Wei Wang; Wenhan Zhao; Qiang Ma; Ange Nsilani Kouediatouka; Hui Zhang; Guangneng Dong; Meng Hua; Hon-Yuen Tam The synergistic effect of surface texturing and lubricants with various viscosity and polarity properties is an attractive and unexplored topic. In this study, surface texturing...

...Robert J. Sadinski; Carl H. Hager, Jr.; William M. Hannon The relative volume and falling body viscosity of a common high-pressure rheology reference lubricant, di-(2-ethylhexyl) sebacate (DEHS), are presented. Relative volume measurements up to 300 MPa are completed with a piezo-bellows relative...

... angle (deg) 20 − Helix angle (deg) 0 − Average radius (mm) − 70 Table 2 Physical properties of the oils used in the study Oil number Density (kg/m 3 ) Kinematic viscosity at 40 °C (cSt) Kinematic viscosity at 100 °C (cSt) 1 837 at 30 °C 41 7.4 2 920...

... γ ˙ = shear rate ɛ = emissivity η = apparent viscosity ρ = density τ = shear stress τ yd = yield stress ɸ = volume fraction ψ = sphericity ɷ = the rotational speed of the disc The datasets generated and supporting...

... curve describing relationship between C f and Re P, Δ P = air pressure and pressure difference, respectively (Pa) Ra = the average deviation of the roughness irregularities from the mean line Re = Reynolds number μ = viscosity coefficient (Pa · s) ρ = air...

... rate for MRF 80 and ( b ) dynamic viscosity versus shear rate for MRF 80 (a) Flow curves of shear stress versus shear rate for MRF 80 and (b) dynamic viscosity versus shear rate for MRF 80 Figure 6( a ) shows shear stress with shear rate increases with increasing magnetic flux density...

...Thomas J. Zolper; Scott Bair; Kyle Horne The ASME Pressure-Viscosity Report was a seminal publication on high pressure-viscosity and density supervised by the ASME Research Committee on Lubrication, sponsored by dozens of industries, and undertaken by Harvard University using high-pressure...

...Dongil Shin; Jongin Yang; Xiaomeng Tong; Junho Suh; Alan Palazzolo Traditional analysis of journal bearings assumed a constant viscosity which simplified the solutions for static and dynamic characteristics and responses. Today's high-performance machinery requires more accurate models wherein...

.... , and McKinley , G. H. , 2017 , “ Thermokinematic Memory and the Thixotropic Elasto-Viscoplasticity of Waxy Crude Oils ,” J. Rheol. (N. Y. N. Y). , 61 ( 3 ), pp. 427 – 454 . 10.1122/1.4978259 [39] Da Cruz , F. , Chevoir , F. , Bonn , D. , and Coussot , P. , 2002 , “ Viscosity...

...Scott Bair; Samuel Flores-Torres Understanding the pressure and shear dependence of viscosity is essential to an understanding of the mechanisms of film forming and friction in concentrated contacts. The blending of different molecular mass polyalphaolefins (PAOs) may permit the formulator...

... of polyvinylpyrrolidone caused the improvement in dynamic viscosity at lower shear rates and a significant change of viscosity in low temperatures. An increased value of the yield point of the tested lubricating compositions after introduction of the additive was also observed. The measure for antiscuffing properties...

...Peter Christiansen; Niels Schmidt Hansen; Martin Thomas Overdahl Lund; Jon Spangenberg; Niels Bay This paper describes the construction and testing of a simple, experimental tool setup that enables determination of the pressure–viscosity relationship for high viscosity oils. Comparing...

... condition. The traditional opinion that effective viscosity decreases with increasing temperature cannot completely explain this phenomenon. In this study, the air entrainment effect is introduced and evaluated using computational fluid dynamics (CFD). CFD results considering air entrainment, viscous...