scholarly journals Surface tension of the most popular models of water by using the test-area simulation method

2007 ◽  
Vol 126 (15) ◽  
pp. 154707 ◽  
Author(s):  
C. Vega ◽  
E. de Miguel
Keyword(s):  
Surface Tension ◽  
Simulation Method ◽  
Test Area

scholarly journals Test-area surface tension calculation of the graphene-methane interface: Fluctuations and commensurability

2017 ◽  
Vol 146 (21) ◽  
pp. 214112 ◽  
Author(s):  
H. D. d’Oliveira ◽  
X. Davoy ◽  
E. Arche ◽  
P. Malfreyt ◽  
A. Ghoufi
Keyword(s):  
Surface Tension ◽  
Test Area ◽  
Interface Fluctuations

Simulation of the Effects of the Physical Properties on Particle Formation of Pulsated Orifice Ejection Method (POEM)

2012 ◽  
Vol 509 ◽  
pp. 161-165
Author(s):  
Yi Fan Fu ◽  
Wei Dong ◽  
Ying Li ◽  
Yi Tan ◽  
Ming Hui Yi ◽  
...  
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Physical Properties ◽  
Molten Metal ◽  
Simulation Method ◽  
Particle Formation ◽  
Physical Parameters ◽  
Wide Range ◽  
Vibration Time ◽  
Ejection Method

A simulation method was used to study the effects of physical parameters, including the contact angle between molten metal and material of orifice, surface tension and viscosity on particle formation of POEM. Droplets can be stably obtained only when the contact angel is at least 90° or larger, as well as the surface tension is adequate. Within a wide range, viscosity has little effect on droplet formation; as the viscosity increases, necking time is postponed and vibration time is shortened.

scholarly journals Development of Moving Particle Simulation Method for Multiliquid-Layer Sloshing

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Kyung Sung Kim ◽  
Moo Hyun Kim ◽  
Jong-Chun Park
Keyword(s):  
Surface Tension ◽  
Oil And Gas ◽  
Particle Interaction ◽  
Excitation Frequency ◽  
Simulation Method ◽  
Particle Simulation ◽  
Offshore Structure ◽  
Mps Method ◽  
Buoyancy Correction ◽  
Moving Particle

The mixed oil and gas including water and sand are extracted from well to offshore structure. This mixed fluid must be separated for subsequent processes by using wash tanks or separators. To design such a system, a proper numerical-prediction tool for multiphase fluids is required. In this regard, a new moving particle simulation (MPS) method is developed to simulate multiliquid-layer sloshing problems. The new MPS method for multifluid system includes extra search methods for interface particles, boundary conditions for interfaces, buoyancy-correction model, and surface-tension model for interface particles. The new particle interaction models are verified through comparisons with published numerical and experimental data. In particular, the multiliquid MPS method is verified against Molin et al’s (2012) experiment with three liquid layers. In case of excitation frequency close to one of the internal-layer resonances, the internal interface motions can be much greater than top free-surface motions. The verified multiliquid MPS program is subsequently used for more nonlinear cases including multichromatic multimodal motions with larger amplitudes, from which various nonlinear features, such as internal breaking and more particle detachment, can be observed. For the nonlinear case, the differences between with and without buoyancy-correction and surface-tension models are also demonstrated.

scholarly journals Discussion on numerical simulation method of salt-resistant polymer flooding in three types of reservoirs

2021 ◽  
Vol 329 ◽  
pp. 01088
Author(s):  
Jiqiang Chen
Keyword(s):  
Numerical Simulation ◽  
Optimal Design ◽  
Simulation Method ◽  
Polymer Flooding ◽  
Test Area ◽  
Actual Situation ◽  
Design Scheme ◽  
Numerical Simulation Method ◽  
Injection Parameter

According to the development characteristics of three types of reservoirs, this paper analyzes the main characteristics of salt-resistant polymer, and forms a highly targeted setting method for the key parameters of numerical simulation. At the same time, according to the actual situation of the salt-resistant test area, different injection parameter schemes are predicted, and the optimal design scheme is determined. Finally, the numerical simulation method of salt-resistant polymer flooding in three types of reservoirs is preliminarily formed.

A weighted test-area method for calculating surface tension

2013 ◽  
Vol 39 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Hong Peng ◽  
Anh V. Nguyen ◽  
Greg R. Birkett
Keyword(s):  
Surface Tension ◽  
Test Area ◽  
Area Method

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

The Critical Point Drying Method Applied to Scanning Electron Microscopy of L-929 Cells

1970 ◽  
Vol 28 ◽  
pp. 278-279
Author(s):  
Charles TurnbiLL ◽  
Delbert E. Philpott
Keyword(s):  
Electron Microscopy ◽  
Carbon Dioxide ◽  
Surface Tension ◽  
Critical Point ◽  
Freeze Drying ◽  
Attractive Alternative ◽  
Crystal Formation ◽  
Critical Point Drying ◽  
Time Required ◽  
Scanning Electron

The advent of the scanning electron microscope (SCEM) has renewed interest in preparing specimens by avoiding the forces of surface tension. The present method of freeze drying by Boyde and Barger (1969) and Small and Marszalek (1969) does prevent surface tension but ice crystal formation and time required for pumping out the specimen to dryness has discouraged us. We believe an attractive alternative to freeze drying is the critical point method originated by Anderson (1951; for electron microscopy. He avoided surface tension effects during drying by first exchanging the specimen water with alcohol, amy L acetate and then with carbon dioxide. He then selected a specific temperature (36.5°C) and pressure (72 Atm.) at which carbon dioxide would pass from the liquid to the gaseous phase without the effect of surface tension This combination of temperature and, pressure is known as the "critical point" of the Liquid.

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