Results 11 to 20 of about 114,801 (234)

Comprehensive Investigation of the Petrophysical and Two-Phase Flow Properties of the Tight Sandstone in Yanchang Formation, Ordos Basin, China: Insights from Computed Tomography Imaging and Pore Scale Modelling

open access: yesLithosphere, 2022
Accurate determination of petrophysical and fluid transporting properties of rocks is essential for many engineering applications. In this paper, microcomputed tomography (CT) imaging technique is adopted to image the microstructure of tight sandstones ...
Yao Wang   +5 more
doaj   +1 more source

Transport of polymer particles in a oil-water flow in porous media: enhancing oil recovery [PDF]

open access: yes, 2018
We study a heuristic, core-scale model for the transport of polymer particles in a two phase (oil and water) porous medium. We are motivated by recent experimental observations which report increased oil recovery when polymers are injected after the ...
Keilegavlen, Eirik   +4 more
core   +2 more sources

Inertial dynamics of air bubbles crossing a horizontal fluid–fluid interface [PDF]

open access: yes, 2012
The dynamics of isolated air bubbles crossing the horizontal interface separating two Newtonian immiscible liquids initially at rest are studied both experimentally and computationally.
Bonhomme, Romain   +3 more
core   +2 more sources

Influence and Analysis of Trapped-oil on Output Characteristic of Gear Motor

open access: yesJixie chuandong, 2022
To clarify characteristics of trapped-oil of gear motor and its influence on output torque and output speed, in terms of meshing and oil trapping process of motor gear pair, the medium pressure distribution on the tooth flanks and the solution model of ...
Shengjie Yan, Ruyi Wang
doaj  

A Numerical Study of Initiation and Migration of Trapped Oil in Capillaries with Noncircular Cross Sections

open access: yesGeofluids, 2019
To clarify the initiation and migration mechanisms of a discontinuous oil phase in pores, a numerical study was performed to interpret the starting phenomenon and flowing rules of oil trapped in capillaries that have noncircular cross sections.
Long Long   +3 more
doaj   +1 more source

Output Torque and Speed Influence by Trapped-oil of Gear Motor and Its Ripple Minimization Strategy

open access: yesJixie chuandong, 2021
In order to clarify the influence mechanism of trapped-oil on output torque and speed of gear motor and its ripple minimization strategy,from its special trapped-oil characteristics analysis and two aspects of double tooth meshing and single tooth ...
Rui Peng, Jianfeng Wang, Ziwen Sun
doaj  

The Modification Mechanism of Nano-Liquids on Streamer Morphology and Breakdown Strength under Microsecond Pulse

open access: yesApplied Sciences, 2020
In liquid mediums, whether the breakdown strength can be greatly improved after introducing the nano-particles has been widely investigated, however, there has been no scientific consensus on the modification mechanism of this anomalous phenomenon.
Diangeng Li   +3 more
doaj   +1 more source

Reverse Design of Cycloid Tooth Profile Without Trapped Oil and Implementation Measures of Low Flow Ripple for Gear Pump

open access: yesJixie chuandong, 2022
In order to solve the two structural problems of trapped oil and large flow ripple in gear pump and based on transmission advantages of cycloid gear and its forming principle,tooth number and radius factor of rolling circle which can best reflect pump ...
Yuncai Xia, Haibin Hao, Yin Mao
doaj  

Performance of Electric Fields for Enhanced Oil Recovery [PDF]

open access: yesشیمی کاربردی روز
With the increase of crude oil consumption and the decrease in extractable resources, the development of new methods to enhanced oil recovery has become of particular concern. One advanced and exploited method in recent years is employing external fields,
Negin Ghaderi Hayati   +2 more
doaj   +1 more source

Large-Eddy Simulation and experimental study of cycle-to-cycle variations of stable and unstable operating points in a spark ignition engine [PDF]

open access: yes, 2012
This article presents a comparison between experiments and Large-Eddy Simulation (LES) of a spark ignition engine on two operating points: a stable one characterized by low cycle-to-cycle variations (CCV) and an unstable one with high CCV.
Dugué, Vincent   +5 more
core   +3 more sources

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