A new molecular model for ethylene oxide (C2H4O) is developed and optimized using experimental data on vapor pressure, bubble density, and enthalpy of vaporization. This simple molecular model, consisting of three Lennard–Jones sites plus one static point dipole, is used for predicting a wide variety of thermo-physical properties. These are phase equilibria, thermal, caloric, transport properti...

Density, viscosity and refractive index of pure, binary and ternary mixtures of diethanolamine (DEA) and methyl diethanolamine (MDEA) with water have been measured at different temperatures from 288.15 K to 323.15 K at atmospheric pressure. Also, this study presents the effects of mixture composition and temperature upon these thermo- physical properties. To measure the density and refractive i...

this research develops thermo-elastic analysis of a functionally graded cylinder under thermo-mechanical loadings. heat conduction equation in cylindrical coordinate system is solved. thermal conductivity coefficient is graded along the radial direction. by considering a symmetric distribution of temperature, loading and boundary conditions, strain-displacement and stress-strain relations can b...

In this paper 1 we report results for the prediction of thermo-dynamic properties based on neural networks, evolutionary algorithms and a combination of them. We compare backpropagation trained networks and evolution strategy trained networks with two physical models. Experimental data for the enthalpy of vaporization were taken from the literature in our investigation. The input information fo...

The present paper aims to study the effect of initial stress on the 2–D problem of a homogeneous, isotropic, generalized thermo-viscoelastic material with voids in the context of Green–Naghdi theory. The modulus of elasticity is taken as a linear function of reference temperature. The analytical expressions for the physical quantities are obtained in the physical domain by using the normal mode...

The purpose of this work was searching of the formation of grain boundaries in metal-ceramics composites at various metal concentrations and sintering temperatures, influence of these boundaries on elastic moduli, coefficient absorption ultrasonic waves (USW) and thermo-conductivity to find the coupling of these properties and to estimate the optimal value of the metal concentration for achieve...

Stimuli-responsive hydrogels are able to change their physical properties such as their elastic moduli in response to changes in their environment. If biocompatible polymers are used to prepare such materials and if living cells are encapsulated within these networks, their switchability allows the cell-matrix interactions to be investigated with unprecedented consistency. In this paper, thermo...

The process of reversible coloration changes induced at least in one-direction by photoirradiation is referred to as photochromism.1) The two isomers of photochromic compounds differ in their geometrical and electrical structures. These geometrical and electrical differences lead to changes in the physical properties of the molecules, such as their absorption and fluorescence spectra, refractiv...

The modeling of thermo-physical fluid properties is of great importance when modeling thermo-fluid systems. The Modelica Standard Library provides a number of medium models that can be used in component models but are not sufficient in many applications. This paper presents a new interface library with a Modelica front-end that allows for an easy inclusion of external fluid property code in Mod...