Results 21 to 30 of about 19,469 (232)
Nucleation of jet engine oil vapours is a large source of aviation-related ultrafine particles
Communications Earth & Environment, 2022 Jet engine lubrication oil is an efficient nucleation agent that likely contributes to high levels of ultrafine particles near airports contributing to poor air quality, suggest laboratory thermodenuder experiments and observations near Frankfurt ...
Florian Ungeheuer +10 more
doaj +1 more source
Performance of a New Aeronautic Oil-Guiding Splash Lubrication System
Lubricants, 2022 Among ever-increasing demands for low power consumption, low weight, and compact reducer systems, an oil-guiding splash lubrication method integrating the oil-guiding cylinder and pipes is suggested to be more suitable for light helicopters, instead of ...
Yu Dai +4 more
doaj +1 more source
Flow in a double-film-fed fluid bead between contra-rotating rolls, Part 1: equilibrium flow structure [PDF]
, 2001 In multiple-roll coaters thin liquid films are transferred from roll to roll by means of liquid ‘beads’ which occupy the small gaps between adjacent rolls.
Gaskell, P.H. +2 more
core +1 more source
Numerical Analysis for Wetting Behaviors of an Oil Jet Lubricated Spur Gear
Lubricants, 2022 As it is widely employed in the aeronautical transmission system, a better understanding of the oil jet lubrication behavior is vital to determine the total system energy consumption.
Yu Dai +3 more
doaj +1 more source
Ouzo Column under Impact: Formation of Emulsion Jet and Oil-Lubricated Droplet [PDF]
Langmuir, 2021 We investigated the dynamics of a liquid column consisting of ouzo emulsion under the impact generated when the liquid container lands on a hard ground. At a cavitation number of 0.36, where cavitation is expected to occur, our high-speed videography captured the traveling jet and cavitation bubbles while the oil microdroplets in ouzo after different ...
Kyota Kamamoto +3 more
openaire +3 more sources
Lubricants, 2023 Oil lubrication is widely adopted in rolling bearings, the characteristics of which affect the oil film formation and friction state, and also the heat generation and dissipation characteristics.
Baogang Wen +3 more
doaj +1 more source
Study of Lubricant Jet Flow Phenomena in Spur Gears [PDF]
Journal of Lubrication Technology, 1975 Lubricant jet flow impingement and penetration depth into a gear tooth space were measured at 4920 and 2560 using a 8.89-cm- (3.5-in.) pitch dia 8 pitch spur gear at oil pressures from 7 × 104 to 41 × 104 N/m2 (10 psi to 60 psi). A high speed motion picture camera was used with xenon and high speed stroboscopic lights to slow down and stop the motion ...
L. S. Akin, J. J. Mross, D. P. Townsend
openaire +1 more source
Stagnation–saddle points and flow patterns in Stokes flow between contra-rotating cylinders [PDF]
, 1998 The steady flow is considered of a Newtonian fluid, of viscosity mu, between contra-rotating cylinders with peripheral speeds U-1 and U-2 The two-dimensional velocity field is determined correct to O(H-0/2R)(1/2), where 2H(0) is the minimum separation of
Gaskell, P.H. +2 more
core +1 more source
Operating Limitations of High-Speed Jet-Lubricated Ball Bearings [PDF]
Journal of Lubrication Technology, 1976 A parametric study was performed with 120-mm bore angular-contact ball bearings having a nominal contact angle of 20 deg. The bearings either had an inner- or an outer-race land riding cage. Lubrication was by recirculating oil jets. The oil jets either had a single or dual orifice. Thrust load, speed, and lubricant flow rate were varied.
E. V. Zaretsky +2 more
openaire +1 more source
LubricantsThe transient lubrication conditions of rolling bearings are different in gearboxes and bearing testers. It has been observed that samples of qualified rolling bearings tested in rolling bearing testers often fail and do not meet lifespan requirements ...
Shushen Gao +6 more
doaj +1 more source