نتایج جستجو برای: interfacial area

تعداد نتایج: 604570  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
seied hossein ghiassi ali akbar safekordi fatemeh babazadeh shareh

the purpose of the present paper is to develop light beam method to measurement of interfacial area in a rectangular gas-liquid bubble column. total interfacial area can be determined in bubble column filled by transparent liquid by light transmission method. according to pervious researches, the fraction of parallel light is function of interfacial area and optical path length that these two p...

Ali Akbar Safekordi, Fatemeh Babazadeh Shareh Seied Hossein Ghiassi

The purpose of the present paper is to develop light beam method to measurement of interfacial area in a rectangular gas-liquid bubble column. Total interfacial area can be determined in bubble column filled by transparent liquid by light transmission method. According to pervious researches, the fraction of parallel light is function of interfacial area and optical path l...

Journal: :Environmental science & technology 2008
Molly S Costanza-Robinson Katherine H Harrold Ross M Lieb-Lappen

In this work, total smooth air-water interfacial areas were measured for a series of nine natural and model sandy porous media as a function of water saturation using synchrotron X-ray microtomography. Interfacial areas decreased linearly with water satuation, while the estimated maximum interfacial area compared favorably to the media geometric surface areas. Importantly, relative interfacial ...

Journal: :Environmental science & technology 2003
Vivek Jain Steven Bryant Mukul Sharma

The knowledge of the area of interfaces between phases is important to understand and quantify many flow and transport processes in porous media. In this work, we apply the interfacial tracer technique to study the dependence of fluid-fluid interfacial area on saturation and wettability. The interfacial area between the wetting and the nonwetting phases (brine and decane) in unconsolidated poro...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2009
Hsin-Ling Cheng Sachin S Velankar

When particles adsorb at a fluid/fluid interface at a sufficiently high concentration, the interface loses mobility and displays solidlike characteristics, a phenomenon called "interfacial jamming". Jamming can arrest interfacial tension-driven morphological coarsening in liquid/liquid or gas/liquid systems and therefore stabilize two phase morphologies with unusual interfacial shapes, for exam...

2003
Scott A. Bradford Feike J. Leij

Knowledge of the fluid-fluid and fluid-solid interfacial areas is important to better understand and quantify many flow and transport processes in porous media. This paper presents estimates for interfacial areas of porous media containing two or three fluids from measured capillary pressure (PC)-saturation (S) relations. The thermodynamic treatment of two-fluid PC-S relations presented by Morr...

Journal: :Journal of Zhejiang University. Science 2004
Wei-rong Zhao Hui-xiang Shi Da-hui Wang

Danckwert's method was used to determine the specific interfacial area, a, and the individual mass transfer coefficient, k(L), during absorption of CO(2) in a bubble column with an anionic surfactant in the carbonate-bicarbonate buffer solution and NaAsO(2) as catalyst, the presence of which decreases the specific interfacial area and the individual mass transfer coefficient. The specific inter...

2006
U Graf P Papadimitriou

The Computational Fluid Dynamics (CFD) code FLUBOX is developed at GRS for the multidimensional simulation of two-phase flows. The single-pressure two-fluid model is used as basis of the simulation. A basic mathematical property of the two-fluid model of FLUBOX is the hyperbolic character of the convection. The numerical solution methods of FLUBOX make explicit use of the hyperbolic structure o...

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