Results 251 to 260 of about 85,851 (265)

Mathematical modelling of transient behaviour of deep bed filtration

Water Research, 1988
Abstract This study proposes a mathematical model based on the concept that there exists a maximum limit on particle deposition on the filter grain, to describe the entire cycle of filtration. The three model coefficients appearing in this mathematical model were calculated for different operating conditions using experimental results obtained from a
S. Vigneswaran, Ravi Kumar Tulachan
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Mathematical modelling of dextran filtration through hollow fibre membranes

Separation and Purification Technology, 2014
Abstract In this paper we present a mathematical model of an ultrafiltration process. The results of the model are produced using standard numerical techniques with Comsol Multiphysics. The model describes the fluid flow and separation in hollow fibre membranes.
Frank Vinther, Manuel Pinelo, Morten Brøns, Gunnar Jonsson, Anne S. Meyer   +4 more
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Multistage affinity cross-flow filtration: mathematical modelling and analysis

Bioprocess Engineering, 1996
A multistage affinity cross-flow filtration (mACFF) process for protein purification is proposed. The process is mathematically modelled taking into account a case of rapid equilibrium binding of a target protein to its macroligand. The process performance, i.e., dimensionless breakthrough volume (Qb+)and recovery yield (REC) to obtain a desired purity
X. -Y. Dong, L. -Y. Li, Y. Sun
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Mathematical analysis for internal filtration of convection-enhanced high-flux hemodialyzer

Computer Methods and Programs in Biomedicine, 2012
Structural modifications using a conventional hemodialyzer improved the internal filtration and clearance of middle molecular weight wastes by enhanced convection effect. In this study, we employed a mathematical model describing the internal filtration rate as well as the hemodynamic and hematologic parameters in highflux dialyzer to interpret the ...
Jung Chan, Lee, Kyungsoo, Lee, Hee Chan, Kim   +2 more
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Mathematical formulation of cake filtration for deformable solid particles

Chemical Engineering Science, 1985
Les relations contrainte-deformation des particules solides sont supposees representees par la loi de Hooke.
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Conceptually simple mathematical models of filtration (and exchange) processes

Ecological Modelling, 1983
Abstract Environmental assessment methodologies and studies of element cycling in ecosystems require a quantitative description of each transfer process contributing to the mobility of the entity (or element) under scrutiny. A conceptually simple filtration model is put forward as a candidate description of such a transfer process, appropriate when ...
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Mathematical analysis of sour cherry juice filtration

1992
Vişne suyunun filtrasyonu çalışılmıştır. Filtre tablasının kaplanması, filtrasyondan önce vişne suyuna filtre yardımcı maddelerinin eklenmesi, kullanılan filtre tablasının çeşidi, filtre yardımcı maddesinin parçacık boyutu, kaplama ve filtre yardımcı maddelerinin miktarları, operasyon sıcaklığı ve basıncı denenmiştir.
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Mathematical Modeling of Filtration Processes in Porous Media

2014
The current variety of filtration theories suggests that the porous medium and the fluid filling it form some continuous medium. That is, the elements of the porous medium-fluid system, though considered physically infinitesimal, however, are large enough compared to the size of pores and particles (grains, fibers) forming a porous medium.
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Mathematical Modeling on Ultra-Filtration Using Functionalized Carbon Nanotubes

Applied Mechanics and Materials, 2013
Numerous computational simulations have been performed for the study of the ultra-filtration using carbon nanotubes. However, most carbon nanotubes have dangling bonds at nanotube rims, which severely compromise the validity of such computational simulations.
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Mathematical simulation of steady filtration with multivalued law

2013
We consider a steady process of filtration of the incompressible high-viscosity fluid, following multivalued filtration law. Generalized statement of this problem is formulated in the form of mixed variational inequality with monotone operator and separable generally nondifferentiable functional in Hilbert space.
Badriev I., Nechaeva L.
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