A Multiscale Approach for Building a Mechanism Based Catalysis Model for High Enthalpy Carbon Dioxide Flow

2007 ◽  
Author(s):  
Jan Thoemel ◽  
Johan Lukkien ◽  
Olivier Chazot
Keyword(s):  
Carbon Dioxide ◽  
Multiscale Approach ◽  
High Enthalpy

Nonequilibrium Nozzle Expansions of Carbon Dioxide from a High-Enthalpy Reservoir

AIAA Journal ◽  
1973 ◽  
Vol 11 (10) ◽  
pp. 1369-1370 ◽  
Author(s):  
N. A. EBRAHIM ◽  
H. G. HORNUNG
Keyword(s):  
Carbon Dioxide ◽  
High Enthalpy

An expansion tube study of high enthalpy carbon-dioxide flows

Shock Waves ◽  
2005 ◽  
pp. 107-112
Author(s):  
T. J. Mclntyre ◽  
T. N. Eichmann ◽  
I. Lourel ◽  
K. M. Hajek ◽  
H. Rubinsztein-Dunlop
Keyword(s):  
Carbon Dioxide ◽  
Expansion Tube ◽  
High Enthalpy ◽  
Tube Study

High-Enthalpy Nonequilibrium Carbon Dioxide Nozzle and Wedge Flows: Experiment and Calculations

AIAA Journal ◽  
1975 ◽  
Vol 13 (7) ◽  
pp. 845-846 ◽  
Author(s):  
N.A. Ebrahim ◽  
H.G. Hornung
Keyword(s):  
Carbon Dioxide ◽  
High Enthalpy

Blunt-Body Aerothermodynamic Database from High-Enthalpy Carbon-Dioxide Testing in an Expansion Tunnel

2017 ◽  
Vol 31 (3) ◽  
pp. 712-731 ◽  
Author(s):  
Brian R. Hollis ◽  
Dinesh K. Prabhu ◽  
Matthew Maclean ◽  
Aaron Dufrene
Keyword(s):  
Carbon Dioxide ◽  
Blunt Body ◽  
High Enthalpy ◽  
Expansion Tunnel

The Impact of Carbonated Water on Wettability: Combined Experimental and Molecular Simulation Approach

SPE Journal ◽  
2021 ◽  
pp. 1-13
Author(s):  
Mohammad H. Alqam ◽  
Sidqi A. Abu-Khamsin ◽  
Saad F. Alafnan ◽  
Abdullah S. Sultan ◽  
Abdulaziz Al-Majed ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Molecular Simulation ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Pure Water ◽  
Wettability Alteration ◽  
Multiscale Approach ◽  
Carbonated Water ◽  
Underlying Mechanisms ◽  
The Impact

Summary Carbonated water injection has gained wide interest as an enhanced oil recovery technique. The efficiency of oil displacement during an ordinary waterflood is dictated and governed mainly by the viscous and capillary forces between oil and water. These forces are controlled by the interfacial tension (IFT) between the fluids and the contact angle (CA) with the rock surface. In this study, the pendant drop technique and molecular dynamics (MD) simulation were combined to investigate the effect of adding carbon dioxide on the water/oil/rock interfaces. CA measurement is rather a macroscopic assessment of the wettability while molecular simulation can provide further microscopic insights. The multiscale approach involves direct wettability assessment of asphaltene-containing oil against pure water or carbonated water, both exposed to two types of carbonate rock samples. Molecular characterization of asphaltenes was carried out by analytical means and different asphaltene structures were recreated on a computational platform for asphaltene-water and asphaltene-carbonated water molecular simulations. The experimental data revealed that the carbonated water caused the CA to change from weakly oil-wet to intermediate to water-wet wettability. Molecular simulation was invoked to shed more light into the underlying mechanisms behind the observed wettability alteration. In particular, molecular simulation of IFT and asphaltene swelling effect driven by the interactions with carbon dioxide were analyzed. The results were found consistent with the experiments. The findings presented in this paper highlight the viability of carbonated water for enhanced oil recovery and provide in-depth insights into the underlying mechanisms.

Electron Cytochemical Study of Carbon Dioxide Laser Effect on Rhesus Monkey Cornea

1974 ◽  
Vol 32 ◽  
pp. 224-225
Author(s):  
K. C. Tsou ◽  
J. Morris ◽  
P. Shawaluk ◽  
B. Stuck ◽  
E. Beatrice
Keyword(s):  
Carbon Dioxide ◽  
Electron Microscope ◽  
Rhesus Monkey ◽  
Carbon Dioxide Laser ◽  
Cytochemical Study ◽  
Laser Effect

While much is known regarding the effect of lasers on the retina, little study has been done on the effect of lasers on cornea, because of the limitation of the size of the material. Using a combination of electron microscope and several newly developed cytochemical methods, the effect of laser can now be studied on eye for the purpose of correlating functional and morphological damage. The present paper illustrates such study with CO2 laser on Rhesus monkey.

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.

A global perspective of ground level, 'ambient' carbon dioxide for assessing the response of plants to atmospheric CO2

2001 ◽  
Vol 7 (7) ◽  
pp. 789-796 ◽  
Author(s):  
L. H. Ziska ◽  
O. Ghannoum ◽  
J. T. Baker ◽  
J. Conroy ◽  
J. A. Bunce ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ground Level ◽  
Global Perspective ◽  
Atmospheric Co2
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