نتایج جستجو برای: real gas pseudo pressure function

تعداد نتایج: 2265942  

Journal: :J. Comput. Physics 2007
Xueying Xie Lawrence C. Musson Matteo Pasquali

The domain deformation method has been applied successfully to steady state free surface flows where the volume of the flow domain is unknown [V.F. de Almeida, Gas–liquid counterflow through constricted passages, Ph.D. thesis, University of Minnesota, Minneapolis, MN 1995; P.A. Sackinger, P.R. Schunk, R.R. Rao, A Newton–Raphson pseudo-solid domain mapping technique for free and moving boundary ...

2001
MAMADOU TRAORE

We extend the concept of fuzzy integral based on ⊕-decomposable measure from nonnegative fuzzy measurable function to extended real-valued fuzzy measurable function. Further investigations of fuzzy integrals based on pseudo-additive decomposable measure are carried out. Meanwhile, the space (S(μ),σ(·,·)) of all fuzzy measurable function will be proved to be a pseudo-metric space. Finally, as an...

In this study, the pressure drop for the binary mixtures of particles differing in size and density in a pseudo-2D spouted bed was experimentally studied. A binary mixture of solid particles including sand, Gypsum, and polyurethane was used in the experimental setup. Effects of static bed height, cone angle, particles diameter, and a particles weight fraction on the bed pressure drop were e...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
ali reza bahramian mansour kalbasi

in the computational fluid dynamics (cfd) modeling of gas-solids two phase flow, the effect of boundary conditions play an important role in predicting the hydrodynamic characteristics of fluidized beds. in this work, the hydrodynamics of conical fluidized bed containing dried tio2 nano-agglomerates were studied both experimentally and computationally. the pressure drop was obtained by pressure...

Journal: :شیمی و مهندسی شیمی ایران 0

since the pressure of hydrocarbon reservoirs drops due to production, in order to keep the production rate constant or increase enhanced recovery, few methods are used. one of which is gas injection to the reservoir. on the other hand, due to reduction in oil production potential of aghajari oil field, gas injection is highly required to pressurize and enhance oil recovery. there is a possibili...

Amir Abbas Izadpanah Farshad Varaminian Mohsen Vafaie Sefti,

The Michelsen stability and multiphase flash calculation by direct minimization of Gibbs free energy of the system at constant temperature and pressure, was used for systems containing gas hydrates. The solid hydrate phase was treated as a solid solution. The fugacities of all components of the hydrate phase were calculated as a function of compositions by the rearranged model of van der Wa...

Journal: :journal of oil, gas and petrochemical technology 0
seyede fateme banihashemi nano structure material research center, faculty of chemical engineering, sahand university of technology hamed azani nano structure material research center, faculty of chemical engineering, sahand university of technology ali akbar babaluo nano structure material research center, faculty of chemical engineering, sahand university of technology

in the present work, b-zsm-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. the tio2- bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. the uniform membrane intermediate layers with low permeation resistance were prepared o...

Journal: :European heart journal cardiovascular Imaging 2012
Maurizio Galderisi Roberta Esposito Vincenzo Schiano-Lomoriello Alessandro Santoro Renato Ippolito Pierluigi Schiattarella Pasquale Strazzullo Giovanni de Simone

AIMS The present study aimed to test the capability of real-time three-dimensional echocardiography (RT3DE) in characterizing early abnormalities of left ventricular (LV) structure and function in native, untreated hypertensive patients. METHODS AND RESULTS Thirty-eight newly diagnosed, never-treated hypertensives (H) and 38 healthy controls (C) underwent both standard echo-Doppler and RT3DE ...

1995
S. Goedecker M. Teter J. Hutter

We present pseudo-potential coefficients for the first two rows of the periodic table. The pseudo potential is of a novel analytic form, that gives optimal efficiency in numerical calculations using plane waves as basis set. At most 7 coefficients are necessary to specify its analytic form. It is separable and has optimal decay properties in both real and Fourier space. Because of this property...

Journal: :the modares journal of electrical engineering 2015
zahra kazemi ali akbar safavi saber pouresmaeeli

monitoring is an essential and inseparable tool for every industrial automation system.  in advanced monitoring, in addition to representation of the process conditions, fast identification and removing of the faults in different critical parts of the system is indispensable. distributed control systems (dcs) are an integral part of the current automation systems and hence, advanced monitoring ...

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