La capacitŽ des Žquations d'Žtat (EoS) cubiques pour corrŽler et prŽdire les Žquilibres de phases en conditions hyperbares est analysŽe. Les donnŽes PVT de corps purs ainsi que les donnŽes d'Žquilibres liquide-vapeur (VLE) et volumŽtriques pour des mŽlanges binaires, jusqu'ˆ 2000 bar sont utilisŽes. Les rŽsultats des corrŽlations et des prŽdictions sont prŽsentŽs pour l'Žquation de Peng-Robinso...

In this work, five different thermodynamic models for correlating the fugacity of water and Tetrahydrofuran (THF) in liquid phase in equilibrium with hydrogen hydrate phase, based on the van der Waals–Platteeuw (vdW-P) statistical thermodynamic model are used and the equilibrium pressures of hydrogen hydrate at different temperatures are calculated. The dissociation pressure of binary hydrogen ...

A PDAE model of a multicomponent gas pipeline has been formulated and solved using the ode15s solver of Matlab. The model with boundary conditions allows for reactions and di usion. Also, general cubic equations of state for pressure and enthalpy are described. To simplify the implementation at this stage, a non-reactive, non-di usional model with fixed feed composition is considered, and multi...

Comparison analysis of linear least-square method and non-linear method of three widely used isotherms (Langmuir, Freundlich, and Redlich-Peterson) were examined to experiment with Remazol Red (C.I. 18221) onto pistachio nut shells at a solution temperature of 293 K. All three isotherm equations showed a better fit to the experimental equilibrium data. The results show that the Langmuir model s...

A large eddy simulation (LES) and combustion instability analysis are performed using OpenFOAM for the multiple shear-coaxial injector combustor DLR-BKD (in German Deutsches Zentrum für Luft–Brennkammer D, Aerospace Center–Combustion Chamber D), which is a laboratory-scale operating in real-gas environment. The Redlich–Kwong–Peng–Robinson equation of state steady-laminar flamelet model adopted ...

An equation-of-state (EoS) scheme to correlate the solubility of solids in supercritical fluids is presented. The solute fugacity coefficient obtained using pure-solvent compressibility factor, and empirical solute-to-solvent parameter ratios cohesion factors covolumes. proposed method simpler than conventional EoS calculations since no iteration required. We retain link classical cubic mixing ...

The minimum miscibility pressure (MMP) is one of the crucial and substantial parameters in the gas injection projects for enhanced oil recovery (EOR). This parameter indicates the minimum pressure at constant temperature and composition conditions for reaching 100 percent of the oil production recovery which leads to a huge economic income. Therefore, an inaccurate prediction of the MMP may lea...

Hydrogen (H2) has emerged as a viable solution for energy storage of renewable sources, supplying off-seasonal demand. contamination due to undesired mixing with other fluids during operations is significant problem. Water regular occurrence; therefore, an accurate prediction H2-water thermodynamics crucial the design efficient and water removal processes. In thermodynamic modeling, Peng–Robins...