Results 111 to 120 of about 45,339 (261)
Analysis of Thermal Elastohydrodynamic Lubrication of Modified Gear Rack Transmission
Jixie chuandong, 2017 The elastohydrodynamic lubrication model of gear rack transmission is established,considering the gear that is modified and thermal effect,comprehensively considering the variation of equivalent radius of curvature,entrainment velocity and the ...
Xu Caihong +3 more
doaj
Surface wettability-driven oil film formation in slider-on-disc contact under limited lubrication
FrictionThe effects of tuned surface wettability on oil film formation in a hydrodynamically lubricated contact with a limited lubricant supply (LLS) were explored in this study.
Zhaogang Jing +5 more
doaj +1 more source
Wet Gas Flow Metering Technique Using a Venturi With Conductance Sensors
Wet gas metering is becoming an increasingly important problem to the oil and gas industry. Much research has been done to measure the water and gas flow rates of two-phase flows using a Venturi meter.
Musbah, Abdurazzaq
core
Facet‐Specific PbS Quantum Dot Passivation Using Halide Perovskites for SWIR Photodetectors
Advanced Materials Interfaces, EarlyView.PbS quantum dots (QDs) are emerging as powerful short‐wave infrared photodetectors, yet the passivation mechanism of large QDs by perovskites ‐ critical for their stability ‐ remains unexplained. Here, we unveil the ligand structure of CH3NH3PbI3 (MAPI)‐passivated 4‐nm PbS QDs using FTIR, XPS, SEM, NMR, and DFT.
L. Paillardet +13 more
wiley +1 more source
Phase flow rate measurements of annular flows
In the international oil and gas industry multiphase annular flow in pipelines and wells is extremely important, but not well understood. This thesis reports the development of an efficient and cheap method for measuring the phase flow rates in two phase
Al-Yarubi, Qahtan
core
Advanced Materials Interfaces, EarlyView.This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos +6 more
wiley +1 more source
Analysis on Lubrication Behavior of Hypoid Gears Under Starved Condition
工程科学与技术, 2019 In engineering practice, the starvation may occur due to insufficient supply of lubricant in hypoid gears. Therefore, a starved elastohydrodynamic lubrication model for hypoid gears was developed with the consideration of contact geometry, surface ...
Wei PU +5 more
doaj
Lubrication Characteristics and Thermal Behavior of Non-Orthogonal Face Gear Pairs in Point Contact
LubricantsThe thermal elastohydrodynamic lubrication problem of non-orthogonal surface gear pairs under point contact conditions was studied. Firstly, a mathematical model is established through a comprehensive contact and lubrication analysis.
Xiaomeng Chu +2 more
doaj +1 more source
, 2005 Zeolite films supported on inert material are a novel type of catalyst that could provide interesting activity and selectivity properties. Such materials will see application in catalytic distillation as reactive packings and in novel low pressure drop ...
Msimang, Velaphi Zakhele
core
A Test on Oil Film Thickness of a Main Bearing in IC Engines
, 2011 Testing ways and means are introduced to measure oil film thickness of a main bearing in multi-cylinder IC engines with two eddy current sensors. A 4100QB diesel engine is taken as a model to detect the influences of loads and journal speeds on oil film ...
Gang Zhi Wang +2 more
core +1 more source