[1] Using first principles quasi-harmonic theory, we have investigated the vibrational and thermodynamic properties of P21/c and C2/c MgSiO3 clinoenstatites. Very good agreement between experimentally measured thermodynamic properties, such as equation of state, and those predicted by the local density approximation (LDA) functional has been found. The level of agreement found in these chain si...

Motivated by existing models used for soft body simulation which are rather complex to implement, we present a novel technique which is based on simple laws of physics and gives high quality results in real-time. We base the implementation on simple thermodynamics laws and use the Clausius-Clapeyron state equation for pressure calculation. In addition, this provides us with a pressure force tha...

Quantitative measurements were carried out on the pressure effect of superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interfaces. In situ XRD experiments revealed that encapsulated Al nanoparticles with different particle sizes can be superheated to 7–15 K beyond the bulk equilibrium melting point of Al, and that this is accompanied by a suppressed thermal expansi...

[1] We have investigated the dissociation of iron free ringwoodite, Mg2SiO4 g-spinel, into MgO periclase and MgSiO3 perovskite using quasi-harmonic free energy computations within the local density approximation (LDA) and generalized gradient approximation (GGA). The transition pressure, Ptr , obtained from GGA is higher and in much better agreement with experimental measurements than its LDA c...

Dendritic solidification is a common mode of solidification. It is also an important model problem in non-equilibrium physics and pattern formation physics. Current theories couple the transfer of latent heat with selection mechanisms at the interface. Measurements of succinonitrile (SCN) dendrites in microgravity show reasonable agreement between heat transfer predictions and experiment. Howev...

Image-analyzing interferometry was used to investigate the dynamics of the dewetting meniscus of a partially wetting fluid on a modified quartz surface during dropwise condensation. The vivid difference in the behavior of the retracting meniscus with respect to its variation in apparent contact angle and curvature after the merger of the drop with the meniscus was found to depend on the wettabi...

We discuss several general aspects of the free energy of the standard model at high temperatures. In particular the Clausius-Clapeyron equation is shown to yield a relation between the latent heat and the jump in the order parameter. The free energy is calculated as function of temperature in resummed perturbation theory to two-loop order. A new resummation procedure is proposed in which the sy...

Any system designed to simulate the earth's atmosphere general circulation, must necessarily be based on the spatial-or temporal average conditions. Irregularities in the profiles of air motions that we observe on daily weather maps often make lose any real meaning to the general circulation. As complicated and inconsistent that is the daily traffic of air particles, it is interesting to define...

In this study, a simulation of theoretical calculation Lattice thermal conductivity Bismuth bulk and nanowires with diameters 98, 115, 327 nm in the temperature range 10 ‒ 300 K pressure 0 1.6 GPa was investigated. These calculations were achieved by using Morelli Callaway model Clapeyron equation that both longitudinal transverse modes are taken into account. Melting temperature, mass density,...

The temperature effect on the microstructure deformability of compacted bentonites was assessed using a Clausius-Clapeyron type equation. To this end, vapor adsorption data obtained at different temperatures under low water content conditions used, identifying changes in microstructural with void volume. formulation proposed allows for an extension 2D-models used macroscopic double-porosity app...