Computational Fluid Dynamics Modeling of Hollow Membrane Filtration for Concentration Polarization

Based on CFD and film theory, filtration’s two-dimensional model of the hollow membrane was established by integrating mass transformation hydrodynamic transportation. Parameters concentration polarization in channel (i.e., solute concentration, factors, layer thickness) were estimated under different hydraulic conditions. In addition, algorithm for thickness has been improved. The results showed that decreasing feed Reynolds number or increasing transmembrane pressure can enhance phenomena. Concentration parameters increased sharply at initial place (X/H < 25, where H is entrance width, X distance from entrance) then flatten out > 25) along channel; factors arranged a U-shape channel’s cross-section. improved could match well with cross section data, δ2H X/H = 1, 200 are 0.038, 0.11, 0.25, respectively, which reasonably reflect distribution phenomenon channel.