scholarly journals Interfacial properties of binary mixtures of simple fluids and their relation to the phase diagram

2020 ◽  
Vol 22 (22) ◽  
pp. 12544-12564 ◽  
Author(s):  
Simon Stephan ◽  
Hans Hasse
Keyword(s):  
Phase Diagram ◽  
Phase Equilibrium ◽  
Binary Mixtures ◽  
Interfacial Properties ◽  
Wetting Transition ◽  
Liquid Interfaces ◽  
Simple Fluids ◽  
Three Phase

Enrichment at vapour–liquid interfaces can be interpreted as a wetting transition in the vicinity of a three phase equilibrium.

scholarly journals Interfacial Properties of Binary Mixtures of Simple Fluids and their Relation to the Phase Diagram

2021 ◽  
Author(s):  
Simon Stephan ◽  
Hans Hasse
Keyword(s):  
Phase Diagram ◽  
Interfacial Properties ◽  
Wetting Transition ◽  
Interfacial Region ◽  
Gradient Theory ◽  
Type I ◽  
Phase Line ◽  
Type Iii ◽  
Three Phase ◽  
Wide Range

Interfacial properties of binary fluid mixtures were studied using both molecular dynamics (MD) simulations and density gradient theory (DGT). The focus of the study is on the relation of the interfacial properties to the phase diagram of the mixture. Two binary Lennard-Jones mixtures were investigated in a wide range of states: a highly asymmetric mixture (type III), which exhibits vapour–liquid equilibria (VL1E and VL2E), liquid–liquid equilibria (L1L2E), a three-phase equilibrium (VL1L2E), and supercritical fluid–fluid equilibria (F1F2E), and, as a reference, an ideal mixture (type I). The studied interfacial properties are: the surface tension, the relative adsorption, the width of the interfacial region, and the enrichment of the low-boiling component, on which we set a focus. Enrichment was observed at VL1 interfaces; and, to a small extent, also at L1L2 interfaces; but not at the supercritical F1F2 interfaces. The large enrichment found at VL1 interfaces of the type III mixture can be interpreted as a wetting transition: approaching the VL1L2E three-phase line from the VL1 side, the enrichment gets stronger and can be interpreted as precursor of the second liquid phase L2. However, the actual existence of a three-phase line in the phase diagram is no prerequisite for an enrichment. The enrichment is found to be highly temperature-dependent and increases with decreasing temperature.

Calculation and Plot of Predominance Area Phase Diagram for Cu-S-O Ternary System

2012 ◽  
Vol 503-504 ◽  
pp. 390-395
Author(s):  
Shang Yong Li ◽  
Yuan Hu ◽  
Gang Xie ◽  
Jun Han Li
Keyword(s):  
Phase Diagram ◽  
Phase Equilibrium ◽  
Physical Properties ◽  
Chemical Reactions ◽  
Phase Point ◽  
Two Phase ◽  
Clear Physical Meaning ◽  
Three Phase ◽  
Calculated Model ◽  
Phase Equilibrium Line

The typical chemical reactions of metal were analyzed in this paper, and the two-phase equilibrium line calculated model was obtained. By use of the physical properties database, the design of chemical reactions and the compounds were to be determined. Through the calculating the two-phase point and three-phase point ,the predominance area phase diagram algorithm based on the physical properties database was formed, which has clear physical meaning and accuracy calculation result, and also whose result was consistent with that of the literature.

Bulk phase behavior and interfacial properties of binary mixtures of Lennard-Jones chains and solvent: a Density Functional Theory Study

Soft Matter ◽  
2022 ◽  
Author(s):  
Sergei A Egorov
Keyword(s):  
Phase Diagram ◽  
Density Functional Theory ◽  
Phase Behavior ◽  
Binary Mixtures ◽  
Density Functional ◽  
Interfacial Properties ◽  
Bulk Phase ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Lennard Jones

A Density Functional Theory study is performed to analyze both bulk and interfacial properties of solvent-polymer binary mixtures. The effects of increasing polymer chain length on the bulk phase diagram...

Effects of the repulsive and attractive forces on phase equilibrium and critical properties of two-dimensional non-conformal simple fluids

2021 ◽  
pp. 115234
Author(s):  
B. Ibarra-Tandi ◽  
J.A. Moreno-Razo ◽  
J. Munguía-Valadez ◽  
J. López-Lemus ◽  
M.A. Chávez-Rojo
Keyword(s):  
Phase Equilibrium ◽  
Two Dimensional ◽  
Critical Properties ◽  
Simple Fluids

High-Resolution Measurements at Nucleate Boiling of Pure FC-84 and FC-3284 and Its Binary Mixtures

2009 ◽  
Vol 131 (12) ◽  
Author(s):  
Enno Wagner ◽  
Peter Stephan
Keyword(s):  
Binary Mixtures ◽  
High Speed ◽  
Contact Region ◽  
Infrared Camera ◽  
Nucleate Boiling ◽  
Heated Wall ◽  
Rear Side ◽  
Phase Contact ◽  
Pure Fluids ◽  
Three Phase

In a special boiling cell, vapor bubbles are generated at single nucleation sites on top of a 20μm thick stainless steel heating foil. An infrared camera captures the rear side of the heating foil for analyzing the temperature distribution. The bubble shape is recorded through side windows with a high-speed camera. Global measurements were conducted, with the pure fluids FC-84 and FC-3284 and with its binary mixtures of 0.25, 0.5, and 0.75mole fraction. The heat transfer coefficient (HTC) in a binary mixture is less than the HTC in either of the single component fluid alone. Applying the correlation of Schlünder showed good agreement with the measurements (1982, “Über den Wärmeübergang bei der Blasenverdampfung von Gemischen,” Verfahrenstechnik, 16(9), pp. 692–698). Furthermore, local measurements were arranged with high lateral and temporal resolution for single bubble events. The wall heat flux was computed and analyzed, especially at the three-phase-contact line between liquid, vapor, and heated wall. The bubble volume and the vapor production rate were also investigated. For pure fluids, up to 50–60% of the latent heat flows through the three-phase-contact region. For mixtures, this ratio is clearly reduced and is about 35%.

Phase Equilibrium of Mg-Nd-Zn System near Mg-Nd Side at 400°C

2016 ◽  
Vol 873 ◽  
pp. 18-22
Author(s):  
Ming Li Huang ◽  
Xue Shen ◽  
Hong Xiao Li
Keyword(s):  
Solid Solution ◽  
Phase Equilibrium ◽  
Ternary Isothermal Section ◽  
Phase Region ◽  
X Ray Diffraction ◽  
Maximum Solubility ◽  
Two Phase ◽  
Solubility Range ◽  
Three Phase ◽  
Equilibrium Alloys

The equilibrium alloys closed to Mg-Nd side in the Mg-rich corner of the Mg-Zn-Nd system at 400°C have been investigated by scanning electron microscopy, electron probe microanalysis and X-ray diffraction. The binary solid solutions Mg12Nd and Mg3Nd with the solubility of Zn have been identified. The maximum solubility of Zn in Mg12Nd is 4.8at%, and Mg12Nd phase can be in equilibrium with Mg solid solution. However, only when the solubility range of Zn in 26at%~32.2at%, Mg3Nd can be in two-phase equilibrium with Mg solid solution. As the results, two two-phase regions as Mg+Mg12Nd and Mg+Mg3Nd and a three-phase region as Mg+Mg12Nd+Mg3Nd in Mg-Nd-Zn ternary isothermal section at 400°C have been identified.

Three-Phase Equilibrium Calculations for Compositional Simulation

2007 ◽  
Author(s):  
Abbas Firoozabadi ◽  
Kjetil Braathen Haugen ◽  
Lixin Sun
Keyword(s):  
Phase Equilibrium ◽  
Compositional Simulation ◽  
Three Phase ◽  
Equilibrium Calculations
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