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Gas Flow through Arrays of Spheres Coated by Liquid Film  

Koo, Sangkyun (Department of Industrial Chemistry, Sangmyung University)
Publication Information
Applied Chemistry for Engineering / v.20, no.6, 2009 , pp. 646-652 More about this Journal
Abstract
Present study deals with a three phase flow problem of determining drag acting on spheres wetted by liquid flow by gas flow through the spheres in simple cubic (SC), body-center cubic (BCC) and face-centered cubic (FCC) array, respectively, when the inertia of gas is negligibly small. The liquid flow driven by gravity on the spheres is assumed to be unaffected by the countercurrent gas flow. A perturbation method coupled with a multipole expansion method is used to calculate the hydrodynamic interactions between spheres and hence determine the effect of liquid film and flow on the gas flow for each periodic array of spheres. An approximate method for evaluating the effect of the liquid film is also presented for simple estimations. It is found that the approximation results are in a reasonable agreement with the numerical calculations.
Keywords
liquid film; sphere; periodic array; three phase flow; stokes flow;
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