Results 61 to 70 of about 14,758 (215)

Air entrainment through free-surface cusps [PDF]

, 2000
In many industrial processes, such as pouring a liquid or coating a rotating cylinder, air bubbles are entrapped inside the liquid. We propose a novel mechanism for this phenomenon, based on the instability of cusp singularities that generically form on ...
A. K. Bin, A. M. Gañán-Calvo, B. Bolton, B. W. Zeff, C. D. Ohl, C. Pozrikidis, D. A. Kessler, D. A. Spence, D. A. Weiss, D. C. Hong, D. D. Joseph, E. Cerda, I. N. Veretennikov, J. D. Sherwood, J. Eggers, J. Eggers, J. Eggers, J. Eggers, J. M. Rallison, J. R. Lister, J.-T. Jeong, Jens Eggers, L. K. Antonovskii, L. Oddershede, M. Siegel, M. Siegel, N. I. Muskhelishvili, O. Reynolds, P. G. Simpkins, S. Richardson, S. Tanveer, T. J. Singler, X. D. Shi, Y. D. Shiikhmurzaev   +33 more
core   +2 more sources

An Improved Air Film Model for Studying the Tilt Characteristics of Aerostatic Thrust Bearings

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, an improved mass‐spring model that treats the lubricating air film as distributed springs is proposed to calculate the static and dynamic angular stiffness of aerostatic thrust bearings. The proposed model refines the traditional mass‐spring model by introducing the spatially varying mechanical properties of the air film and the
Hui Zhuang, Jianguo Ding, Yu Chang
wiley   +1 more source

Numerical Modeling of Oil-Jet Lubrication for Spur Gears using Smoothed Particle Hydrodynamics

, 2016
Understanding and optimizing the lubrication and cooling in aero engine gearbox applications is crucial for a reliable and efficient sub-system design of future aircraft engines. Due to the complex design of gearboxes with its various rotating parts, space and access for experimental investigations are severely limited. Thus, suitable numerical methods
Keller, Marc C., Braun, Samuel, Wieth, Lars, Chaussonnet, Geoffroy, Dauch, Thilo, Koch, Rainer, Höfler, Corina, Bauer, Hans-Jörg   +7 more
openaire   +3 more sources

Shaping Function: Polymeric 3D Systems With Unconventional Geometries for Biomedical Applications

Small, EarlyView.
Particle shape is a key design parameter governing biological interactions. Advances in fabrication enable precise control over anisotropy and compartmentalization, allowing modulation of cellular uptake, transport, and biodistribution, ultimately enhancing therapeutic performance. ABSTRACT Polymer geometry is a primary determinant of physical behavior
Francisca G. Perfeito, Mariana B. Oliveira, João F. Mano   +2 more
wiley   +1 more source

Thermal Degradation and Thermal Decomposition of Plasticized PVC Including POSS Additives for PVC Compounds: Mechanisms, Impact, and Performance of Standards

Journal of Vinyl and Additive Technology, EarlyView.
Additives' structures. ABSTRACT Poly(vinyl chloride) has been a key polymeric material since its commercial production in 1931, demonstrating versatility across numerous industries due to its compatibility with various additives. PVC's inherent properties, flame retardance, durability, and recyclability make it ideal for building and construction ...
Stefano Gardi, Gianluca Sarti, Luca Palin, Enrico Boccaleri, Alberto Frache   +4 more
wiley   +1 more source

Analysis and Experimental Investigation of Oil Jet Flow of Main Reducer Gear based on Flowmaster

Jixie chuandong, 2017
The influence on oil jet flow in nozzle of lubrication system for the main reducer is researched based on the one- dimensional Flowmaster fluid simulation,a more comprehensive and accurate analysis model is put forward.
Yin Zhimin, Liu Shaojun
doaj  

A Study on the Influence Mechanism of the Oil Injection Distance on the Oil Film Distribution Characteristics of the Gear Meshing Zone

Machines
Under the trend of lightweight and high-efficiency development in industrial equipment, precise regulation of lubrication in gear reducers is a key breakthrough for enhancing transmission system efficiency and reliability.
Wentao Zhao, Lin Li, Gaoan Zheng
doaj   +1 more source

Into Mesh Lubrication of Spur Gears with Arbitrary Offset Oil Jet. 2: for Jet Velocities Equal to or Greater than Great Velocity [PDF]

An analysis was conducted for into mesh oil jet lubrication with an arbitrary offset and inclination angle from the pitch point for the case where the oil jet velocity is equal to or greater than gear pitch line velocity.
Akin, L. S., Townsend, D. P.
core   +1 more source

Empirical Physics‐Based Normal Behavior Modeling of Drive Train Temperatures With High‐Resolution Wind Turbine Operating Data

Wind Energy, EarlyView.
ABSTRACT The installed wind energy capacity increases every year. However, operation and maintenance costs still make up a considerable portion of the levelized costs of electricity. This costs can be greatly reduced by the application of suitable early fault detection methods. The supervisory control and data acquisition system of wind turbines is one
Timo Lichtenstein, Victor von Maltzahn, Karoline Pelka   +2 more
wiley   +1 more source

Into Mesh Lubrication of Spur Gears with Arbitrary Offset Oil Jet. I: For Jet Velocity Less than or Equal to Gear Velocity [PDF]

An analysis was conducted for into mesh oil jet lubrication with an arbitrary offset and inclination angle from the pitch point for the case where the oil jet velocity is equal to or less than pitch line velocity.
Akin, L. S., Townsend, D. P.
core   +1 more source