نتایج جستجو برای: porous media

تعداد نتایج: 320552  

2016
Manjit Singh Chanpreet Singh D. Gangacharyulu J. L. Nieber R. Z. Dautov A. G. Egorov

The Flow through saturated-unsaturated porous media is extremely important in various natural and industrial based applications. While the Darcy's law with various modifications are used to model the flow through a porous media, the flow through unsaturated porous media is largely based on conservation of mass and modified Darcy's law where non-linear relationship exists between the p...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2004
D E Feldman Robert A Pelcovits

The nature of glass phases of liquid crystals in random porous media depends on the effective disorder strength. We study how the disorder strength depends on the density of the porous media and demonstrate that it can increase as the density decreases. We also show that the interaction of the liquid crystal with random porous media can destroy long-range order inside the pores.

2006
Zhiming Chen Lin Qun Z. CHEN

We review some of our recent efforts in developing upscaling methods for simulating the flow transport through heterogeneous porous media. In particular, the steady flow transport through highly heterogeneous porous media driven by extraction wells and the flow transport through unsaturated porous media will be considered. Mathematics subject classification: 65F10, 65F30.

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
akbar khodaparast haghi hossein ghanadzadeh daniel rondot

the cost of drying carpet which is done toward the end of the manufacturing process, is quite high. the carpet industry has been using convection drying for many years. little attention has been given to quantifying the effect of microwave power during the drying of carpet. an experimental system was developed whereby air was introduced into the cavity of a domestic microwave oven. the results ...

Journal: :journal of heat and mass transfer research(jhmtr) 2014
ariyan zare ghadi ali haghighi asl mohammad sadegh valipour

numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. polar system has beenselected as coordinate system. as a result, all equations have been discredited in r and θdirections. brinkmann extended darcy model has been utilized to express fluid flow inporous matrix in the enclosure. smaller and...

Journal: :international journal of environmental research 0
s. khamkure universidad autónoma agraria antonio narro, 25315, saltillo, coahuila, méxico c. treesatayapun cinvestav ipn-unidad saltillo. 25900, ramos arizpe, coahuila, méxico e.p. cervantes universidad autónoma agraria antonio narro, 25315, saltillo, coahuila, méxico p.g. melo cinvestav ipn-unidad saltillo. 25900, ramos arizpe, coahuila, méxico a.z. gonzalez universidad autónoma agraria antonio narro, 25315, saltillo, coahuila, méxico

current global water shortage and water pollution problem are some of the crucial issues in theworld, especially in the arid zones. the wastewater reuse was investigated the efficiency of fecal coliform(fc) removal using the intermittent media infiltration (imi) with varying soil content and natural porousmedia (sand, zeolite, vermicompost and charcoal), and its prediction was introduced by app...

Journal: :international journal of environmental research 2013
s. khamkure c. treesatayapun e.p. cervantes p.g. melo a.z. gonzalez

current global water shortage and water pollution problem are some of the crucial issues in theworld, especially in the arid zones. the wastewater reuse was investigated the efficiency of fecal coliform(fc) removal using the intermittent media infiltration (imi) with varying soil content and natural porousmedia (sand, zeolite, vermicompost and charcoal), and its prediction was introduced by app...

Jamshid Moghadasi, Mohammad Jamialahmadi Saeed Naseri,

Sulfate scale deposition (BaSO4, CaSO4, and SrSO4) is a common problem in oilfield operations around the world, which causes significant formation damage during production and injection activities. This paper presents the results of an experimental study on the permeability reduction of porous media due to sulfate scale deposition. A set of experiments were cond...

A.R Moazami H Hashemi H Zamanisabzi J Bazargan

According to the former researcher’s presented relations for flow through rock-fill porous media, the effects of physical characteristics was not studied separately. Hence, due to the application of these relations, physical characteristics of porous materials effect must be investigated separately. In various constructed physical models of porous media, the effect of several variables such as ...

The permeability and tortuosity of pore-scale two and three-dimensional random porous media were calculated using the Lattice Boltzmann method (LBM). Effects of geometrical parameters of medium on permeability and tortuosity were investigated as well. Two major models of random porous media were reconstructed by computerized tomography method: Randomly distributed rectangular obstacles in a uni...

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