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The structure and transport properties of SiO2-Al2O3 melts containing 13 mol% and 47 mol% Al2O3 are investigated by means of large scale molecular dynamics computer simulations. The interactions between the atoms are modelled by a pair…

无序系统与神经网络 · 物理学 2007-05-23 Patrick Pfleiderer , Juergen Horbach , Kurt Binder

The transport properties of molten LiF-YF3 mixtures have been studied by pulsed field gradient nuclear magnetic resonance spectroscopy, potentiometric experiments, and molecular dynamics simulations. The calculated diffusion coefficients…

The aim of this work is to study heat pump cycles, using CO 2 based mixtures as working fluids. Since adding other chemicals to CO 2 moves the critical point and generally equilibrium lines, it is expected that lower operating pressures as…

应用物理 · 物理学 2017-04-24 Paul Bouteiller , Marie-France Terrier , Pascal Tobaly

A phase-field study has been conducted to obtain an understanding of the formation mechanism of the script lamellar pattern of MoSi2/Mo5Si3 eutectic composite, which is a promising candidate for high-temperature structural application. The…

材料科学 · 物理学 2019-06-10 Chuanqi Zhu , Yuichiro Koizumi , Akihiko Chiba , Koretaka Yuge , Kyosuke Kishida , Haruyuki Inui

Full $NVT$ quantum statistics of the H$_3^+$ ion is simulated at low densities using the path integral Monte Carlo approach. For the first time, the molecular total energy, partition function, free energy, entropy and heat capacity are…

地球与行星天体物理 · 物理学 2011-03-22 Ilkka Kylänpää , Tapio T. Rantala

Lithium chloride LiCl is widely used as a prototype system to study the strongly dissociated 1-1 electrolyte solution. Here, we combined experimental measurements and classical molecular dynamics simulations to study the ion conduction in…

软凝聚态物质 · 物理学 2019-05-14 Are Yllö , Chao Zhang

Quantitative prediction of thermodynamic properties in solution is essential for translating atomistic simulations into reliable chemical insight. As an exemplar system, the behaviour of CaCO$_3$ in water has been widely studied to…

Adiabatic mixed quantum/classical molecular dynamics simulations were used to generate snapshots of the hydrated electron (e-) in liquid water at 300 K. Water cluster anions that include two complete solvation shells centered on the e- were…

数据分析、统计与概率 · 物理学 2016-09-28 Ilya A. Shkrob , William J. Glover , Ross E. Larsen , Benjamin J. Schwartz

The structural and dynamic properties of silica melts under high pressure are studied using molecular dynamics (MD) computer simulation. The interactions between the ions are modeled by a pairwise-additive potential, the so-called CHIK…

无序系统与神经网络 · 物理学 2009-11-13 Juergen Horbach

A complete thermodynamical analysis for a non-reacting binary mixture exhibiting the features of a third grade fluid is analyzed. The constitutive functions are allowed to depend on the mass density of the mixture and the concentration of…

数学物理 · 物理学 2023-11-21 Matteo Gorgone , Patrizia Rogolino

An isolated mixture of smooth, inelastic hard spheres supports a homogeneous cooling state with different kinetic temperatures for each species. This phenomenon is explored here by molecular dynamics simulation of a two component fluid,…

统计力学 · 物理学 2009-11-07 Steven R. Dahl , Christine M. Hrenya , Vicente Garzo , James W. Dufty

Extensive first principles calculations are carried out to investigate gold-promoted TiO2(110) surfaces in terms of structure optimizations, electronic structure analyses, ab initio thermodynamics calculations of surface phase diagrams, and…

材料科学 · 物理学 2015-05-28 Matteo Farnesi Camellone , Piotr M. Kowalski , Dominik Marx

Phase stability, and the limits thereof, are a central concern of materials thermodynamics. However, the temperature limits of equilibrium liquid stability in chemical systems have only been widely characterized under constant (typically…

材料科学 · 物理学 2024-10-29 Arian Zarriz , Baptiste Journaux , Matthew J. Powell-Palm

In this work we study the diffusion mechanisms in lithium disilicate melt using molecular dynamics simulation, which has an edge over other simulation methods because it can track down actual atomic rearrangements in materials once a…

材料科学 · 物理学 2014-05-30 Luis G. V. Gonçalves , José P. Rino

We present a study of the melting dynamics of a two-phase eutectic solid. In situ, thin-sample experiments using a transparent eutectic alloy and two-dimensional phase field simulations calibrated for the very same alloy are combined to…

The growing interest in energy applications of molten salts is justified by several of their properties. Their possibilities of usage as a coolant, heat transfer fluid or heat storage substrate, require thermo-hydrodynamic refined…

化学物理 · 物理学 2013-11-12 Roberto Serrano-López , Jordi Fradera , Santiago Cuesta-López

We study the thermodynamics and kinetics of folding for a small peptide. Our data rely on Monte Carlo simulations where the interactions among all atoms are taken into account. Monte Carlo kinetics is used to study folding of the peptide at…

凝聚态物理 · 物理学 2009-11-07 Ulrich H. E. Hansmann , Jose N. Onuchic

Physics students now have access to interactive molecular dynamics simulations that can model and animate the motions of hundreds of particles, such as noble gas atoms, that attract each other weakly at short distances but repel strongly…

物理教育 · 物理学 2015-02-27 Daniel V. Schroeder

We investigate via quantum molecular-dynamics simulations the thermophysical properties of shocked liquid ammonia up to the pressure 1.3 TPa and temperature 120000 K. The principal Hugoniot is predicted from wide-range equation of state,…

材料科学 · 物理学 2015-06-16 Dafang Li , Ping Zhang , Jun Yan

A kinetic Monte Carlo (KMC) method is used to study the structural properties and dynamics of a supercooled binary Lennard-Jones liquid around the glass transition temperature. This technique permits us to explore the potential energy…

软凝聚态物质 · 物理学 2015-06-24 Javier Hernandez-Rojas , David J. Wales