The entry flow of a dilute suspension through a tube : Concentration redistribution effects
نویسندگان
چکیده
2014 The concentration distribution of a dilute suspension of neutrally buoyant rigid spheres is investigated theoretically, in the entry flow of a circular tube. The geometrical effects (interaction between the tube mouth and the particles) are discussed. The convective motion of the particles in a boundary layer flow through the tube (Re ~ 1) is analysed. The effect of an additional inertia-induced migration velocity is then computed, in two different cases. It is found that the geometrical effects together with the particle convection along the tube inlet length can account satisfactorily for the onset of a large peripheral particle-free layer. I he inertia-induced migration accentuates this phenomenon, and creates regions of high concentration. Revue Phys. Appl. 16 (1981) 663-671 1 DÉCEMBRE 1981, PAGE Classification Physics Abstracts 47.55K 47.60
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