A novel hybrid method for the calculation of methane hydrate–water interfacial tension along the three-phase (hydrate–liquid water–vapor) equilibrium line

2021 ◽  
Vol 155 (2) ◽  
pp. 024702
Author(s):  
Ioannis N. Tsimpanogiannis
Keyword(s):  
Water Vapor ◽  
Interfacial Tension ◽  
Hybrid Method ◽  
Liquid Water ◽  
Methane Hydrate ◽  
Equilibrium Line ◽  
Hydrate Water ◽  
Vapor Equilibrium ◽  
Three Phase

Analysis of three-phase equilibrium points for methane hydrate/water/methane systems by NVT molecular dynamics simulation

2016 ◽  
Vol 2016 (0) ◽  
pp. I222
Author(s):  
Daisuke Yuhara ◽  
Paul E. Brumby ◽  
David T. Wu ◽  
Amadeu K. Sum ◽  
Kenji Yasuoka
Keyword(s):  
Molecular Dynamics ◽  
Phase Equilibrium ◽  
Molecular Dynamics Simulation ◽  
Methane Hydrate ◽  
Equilibrium Points ◽  
Dynamics Simulation ◽  
Hydrate Water ◽  
Three Phase

CO2 Rich Gas Mixture Hydrate-Liquid Water-Vapor (H-Lw-V) Equilibrium Measurement and Prediction

2014 ◽  
Vol 625 ◽  
pp. 386-389 ◽  
Author(s):  
Qazi Nasir ◽  
Khalik M. Sabil ◽  
Bezhad Partoon
Keyword(s):  
Water Vapor ◽  
Liquid Water ◽  
Absolute Error ◽  
Average Absolute Error ◽  
Experiment Data ◽  
Equilibrium Pressure ◽  
Software Packages ◽  
Vapor Equilibrium ◽  
Step Heating ◽  
Equilibrium Data

In this paper we present experimental hydrate-liquid water vapor equilibrium data for mixtures of gas comprising rich CO2content. Data were generated by a reliable step-heating technique validated using measured data for CH4. The experimental results obtained in this measurement were compared with various commercial softwares (CSMGem, CSMHYD). The prediction results obtained with different software packages shows in weak agreement with experiment data point with high average absolute error (AAE) of 1.18 and 1.45 for hydrate equilibrium pressure condition while with model used in this work the average absolute error obtained is 0.01 respectively.

scholarly journals Raman Lidar for Synchronous Water Vapor, Liquid Water and Ice Water Profilings

2020 ◽  
Vol 237 ◽  
pp. 06013
Author(s):  
Wang Yufeng ◽  
Zhang Jing ◽  
Wang Qing ◽  
Gao Fei ◽  
Di Huige ◽  
...  
Keyword(s):  
Water Vapor ◽  
Liquid Water ◽  
Weather Condition ◽  
Atmospheric Parameter ◽  
Raman Lidar ◽  
Cloudy Weather ◽  
Three Phase ◽  
Phase Water ◽  
Ice Water ◽  
Vapor Liquid

Water is the only atmospheric parameter with three-phase state. An ultraviolet Raman lidar was developed for synchronous measurements for water vapor, liquid water and ice water in Xi’an University of Technology, Xi’an, China (34.233°N, 108.911°E). An accurate retrieval method on the basis of interference degree is proposed for synchronous three-phase water mixing ratio profiles. Preliminary measurements are carried out in the Laser Radar Center of Remote Sensing of Atmosphere (LRCRSA). Several representative examples are obtained and validated the performance of Raman system. Combined with atmospheric temperature profiles, the synchronous water vapor, liquid water and ice water profiling are retrieved and revealed the variation characteristics in three-phase water. The effective detection can reach up to a height of 5 km under cloudy weather, and synchronized growth in water vapor and liquid water content was obtained in cloud layers. Continuous observations are also made under haze weather condition, and the temporal and spatial evolution trend of three-phase water in clouds at 2 km altitude are successfully realized.

scholarly journals Selecting Characteristic Raman Wavelengths to Distinguish Liquid Water, Water Vapor, and Ice Water

2010 ◽  
Vol 14 (3) ◽  
pp. 209-214 ◽  
Author(s):  
Sun-Ho Park ◽  
Yong-Gi Kim ◽  
Duk-Hyeon Kim ◽  
Hai-Du Cheong ◽  
Won-Seok Choi ◽  
...  
Keyword(s):  
Water Vapor ◽  
Liquid Water ◽  
Ice Water

Methane hydrate crystal growth in a porous medium filled with methane-saturated liquid water

2007 ◽  
Vol 87 (7) ◽  
pp. 1057-1069 ◽  
Author(s):  
D. Katsuki ◽  
R. Ohmura ◽  
T. Ebinuma ◽  
H. Narita
Keyword(s):  
Porous Medium ◽  
Crystal Growth ◽  
Liquid Water ◽  
Methane Hydrate ◽  
Saturated Liquid ◽  
Hydrate Crystal

scholarly journals Drying parameters of rendering mortars

2018 ◽  
Vol 18 (2) ◽  
pp. 7-19 ◽  
Author(s):  
Maria Cláudia de Freitas Salomão ◽  
Elton Bauer ◽  
Claudio de Souza Kazmierczak
Keyword(s):  
Water Vapor ◽  
Water Transport ◽  
Liquid Water ◽  
Water Vapor Permeability ◽  
Water Vapor Transport ◽  
Experimental Program ◽  
Vapor Permeability ◽  
Capillary Absorption ◽  
Drying Behavior ◽  
Drying Curves

Abstract The objective of this article was to study the drying behavior of rendering mortars. Cement-lime mortars with different mix proportions were evaluatedto analyze the influence of mix materials on water transport. The experimental program was produced to observe the transport of liquid water and vapor water in mortars during the drying process. The liquid water transport was studied through capillary absorption and the water vapor transport by the water vapor permeability test. The drying curves used to investigate drying kinetics were obtained according to the methodology recommended by European standard EN 16322. In summary, it is possible to affirm that the aggregate, the binder and water contents determine the behavior of the mortars regarding water transport. The drying index is considered a good indicator of the easiness of both liquid and vapor water transport.

Coupled Liquid Water, Water Vapor, and Heat Transport Simulations in an Unsaturated Zone of a Sandy Loam Field

Soil Science ◽  
2011 ◽  
Vol 176 (8) ◽  
pp. 387-398 ◽  
Author(s):  
Sanjit K. Deb ◽  
Manoj K. Shukla ◽  
Parmodh Sharma ◽  
John G. Mexal
Keyword(s):  
Water Vapor ◽  
Heat Transport ◽  
Liquid Water ◽  
Unsaturated Zone ◽  
Sandy Loam

scholarly journals Spectrally-Resolved Raman Lidar to Measure Atmospheric Three-Phase Water Simultaneously

2020 ◽  
Vol 237 ◽  
pp. 06017
Author(s):  
Fuchao Liu ◽  
Fan Yi
Keyword(s):  
Water Vapor ◽  
Raman Spectra ◽  
Weather Conditions ◽  
Cloud Microphysics ◽  
Raman Lidar ◽  
Atmospheric Water ◽  
Three Phase ◽  
Phase Water ◽  
Spectrally Resolved ◽  
Ice Water

We report on a spectrally-resolved Raman lidar that can simultaneously profile backscattered Raman spectrum signals from water vapor, water droplets and ice crystals as well as aerosol fluorescence in the atmosphere. The lidar emits a 354.8-nm ultraviolet laser radiation and samples echo signals in the 393.0-424.0 nm wavelength range with a 1.0-nm spectral resolution. A spectra decomposition method is developed to retrieve fluorescence spectra, water vapor Raman spectra and condensed (liquid and/or ice) water Raman spectra successively. Based on 8 different clear-sky nighttime measurement results, the entire atmospheric water vapor Raman spectra are for the first time obtained by lidar. The measured normalized water vapor Raman spectra are nearly invariant and can serve as background reference for atmospheric water phase state identification under various weather conditions. For an ice virga event, it’s found the extracted condensed water Raman spectra are highly similar in shape to theoretical ice water Raman spectra reported by Slusher and Derr (1975). In conclusion, the lidar provides an effective way to measure three-phase water simultaneously in the atmosphere and to study of cloud microphysics as well as interaction between aerosols and clouds.

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