title: Design of an asymmetrical flow field-flow fractionation cell with both mean channel and membrane velocities constant.
abstract: We consider an asymmetric flow-field-flow fractionation (FFF) cell with an exponential variation of the channel breadth and a hydraulic conductivity gradient membrane to get a constant efficiency of the separation process over the whole length of the channel. After presenting the model for a membrane of constant hydraulic conductivity, we determine the dependence of conductivity with distance to entrance to get both mean channel and membrane velocities constant.
authors.affiliation: Institut Européen des Membranes, Université Montpellier 2 (ENSCM, UM2, CNRS), CC047, 2 Place Eugène Bataillon, F-34095 Montpellier Cedex 5, France. dejardin@iemm.univ-montp2.fr
authors.forename: P
authors.initials: P
authors.lastname: Déjardin
mesh_terms: D031521:Fractionation, Field Flow / Q000295:instrumentation*; D008433:Mathematics