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Design Improvement Of A Bench-Scale Nanofiltration Device By CFD Study

B. Balannec[1,2], T. Renouard[1,2], and F.Cortès-Juan[3]
[1]Université de Rennes 1-ENSCR-CNRS, France
[2]Université européenne de Bretagne, France
[3]Universidad Politécnica de Valencia, Spain

Feasibility studies in the field of membrane processes are generally first carried out with bench-scale membrane filtration cells. These small laboratory cells also allow evaluating the influence of operational parameters and the membrane performances. Smart design of the cell geometry may improve the flow distribution and consequently the membrane filtration performances by increasing shear ...

Experimental and Numerical Fluid Flows Study on a X-Millichannel

C. Wolluschek[1], F. Etcheverry[2], M. Cachile[2], and J. Gomba[3]
[1]Mecánica de Fluidos e Ingeniería Térmica, Centro tecnológico Cemitec, Noáin, Navarra, Spain
[2]Grupo de Medios Porosos, Facultad de Ingeniería, UBA, Buenos Aires, Argentina
[3]Instituto de Física Arroyo Seco, UNCPBA, Tandil, Argentina.

In this work, a COMSOL model that predicts velocity and concentration fields inside an X-shaped millichannel (4 mm diameter) is developed. Water and a ink low concentration are injected simultaneously in the two inlets of the device. The mass transfer problem is solved by a Fickian model (solute concentration is low compared with the solvent). The parameters in this study are: initial inlet mass ...

Optimization Of The Collection Of Sprays By An Enhanced Electronic Sensor

J. Berges[1], B. Barelaud[1], I. Niort[2], and J.L. Decossas[2]
[1]XLIM, Limoges, France
[2]Université de Limoges, France

We propose the study of an electronic sensor allowing the collection of sprays in free space. The detector consists of three elements: a photodiode situated in the center of the structure to which is applied a bias voltage, an aluminum ring which referenced to a voltage higher than that of the photodiode and an insulating material disk (polyvinyl chloride). The total size of the structure is ...

Simplifying A Model Of Short Subsequent Sections Containing A Common Detailed Cross-Section

J. Krah
AkerSolutions, Fornebu, Norway

In COMSOL Multiphysics it is possible to implement and simulate several independent models in parallel. This can be meaningful when the different models are coupled to each other by some kind of interaction. If a part of the geometries is identical in all models, this part can be reduced in that it is implemented in only one of the geometries. In the other geometries only its solution towards ...

Analysis Of The Design Criteria For Ancient Greek And Roman Catapults

K.M. Paasch
Center for Product Development, Mads Clausen Institute, South Danish University, Denmark

This paper will give a short overview of use of COMSOL Multiphysics for analyzing ancient Greek and Roman catapults with the main focus on the energy storing torsion springs. Catapults have been known and used in the Greek and Roman world from around 399 BC and a fully standardized design for powerful torsion catapults emerged around 270 BC, based on one basic factor, the diameter of the torsion ...

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