Results 71 to 80 of about 14,675 (206)
Bioinspired slippery surfaces combining the hydrophobic–hydrophilic patterns of beetle backs and the lubricated structure of pitcher plants enable efficient water harvesting. The patterned hydrophilic regions promote droplet nucleation and coalescence, while the infused lubricant ensures rapid droplet transport, providing a robust strategy for ...
Wei Huang +7 more
wiley +1 more source
Phase‐field method based numerical modelling of the capillary rise in millimeter‐sized tubes, aiming for anti‐slip applications. The experimental validation was performed through capillary assays in polyethylene oxide (PEO) bulk modified polydimethylsiloxane (PDMS) channels.
Shivam Sharma +7 more
wiley +1 more source
Comparison of heat generation estimation methods for angular contact ball bearings
The article reviews domestic and foreign methods of estimating heat generation in angular contact ball bearings. Models for general-purpose bearings and for aviation angular contact ball bearings are considered.
N. I. Petrov, Yu. L. Lavrentyev
doaj +1 more source
Study of Lubricant Jet Flow Phenomena in Spur Gears: Out of Mesh Condition [PDF]
Oil jet lubrication on the disengaging side of a gear mesh was analyzed. Results of the analysis were computerized and used to determine the oil jet impingement depth for several gear ratios and oil jet to pitch line velocity ratios.
Akin, L. S., Townsend, D. P.
core +1 more source
Evaporation-triggered microdroplet nucleation and the four life phases of an evaporating Ouzo drop
Evaporating liquid droplets are omnipresent in nature and technology, such as in inkjet printing, coating, deposition of materials, medical diagnostics, agriculture, food industry, cosmetics, or spills of liquids.
Diddens, Christian +5 more
core +1 more source
This study evaluates the performance and emissions of CI engines using biodiesel blends derived from rice bran and waste cooking oil, revealing that a 30% biodiesel blend significantly reduces emissions, while a 70% blend affects specific engine parameters. ABSTRACT This research investigates the performance, combustion, and emission characteristics of
S. Prathap Singh +6 more
wiley +1 more source
Performance of large-bore tapered-roller bearings under combined radial and thrust load at shaft speeds to 15,000 rpm [PDF]
The performance of 120.65-mm bore tapered roller bearings was investigated at shaft speeds up to 15,000 rpm. Temperature distribution and bearing heat generation were determined as a function of shaft speed, radial and thrust loads, lubricant flow rate ...
Parker, R. J., Signer, H. R.
core +1 more source
Growth of Subsurface Fatigue Fractures in Large‐Size Bevel Gears
ABSTRACT Large‐size bevel gears are commonly used in marine industry for the applications of propulsion, such as azimuth thrusters. The gears are typically designed for specific use, as they are directly transferring power from one component to another.
Erkka Pentti Kasper Virtanen +4 more
wiley +1 more source
Abstract Line‐shaped contrails formed behind aircraft can evolve into broadly spread and long‐living cirrus clouds under favorable conditions. These contrail‐cirrus contribute significantly to the aviation‐induced radiative forcing. While past modeling studies have examined contrail‐cirrus across various atmospheric and aircraft‐type dependent ...
Annemarie Lottermoser +1 more
wiley +1 more source
Lubrication and performance of high-speed rolling-element bearings [PDF]
Trends in aircraft engine operating speeds have dictated the need for rolling-element bearings capable of speeds to 3 million DN. A review of high-speed rolling-element bearing state-of-the-art performance and lubrication is presented. Through the use of
Coe, H. H. +2 more
core +1 more source

