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Mass transfer around spherical bubbles, drops, and solid particles in uniaxial and biaxial nonlinear extensional creeping flows at large Peclet numbers is the subject of this theoretical report. The fluid mechanics problem is governed by the viscosity ratio (λ) and the nonlinear intensity of the flow (E). The flow outside such bodies reveals a different picture than the linear case (E = 0) such as...
A modified graphical-statistical method for shape factor estimation has been developed and used to estimate the permeability of a perfusive particle as an example. The shape factor was evaluated by calculating the average cross-sectional area for diffusion and the average flow path line length separately. According to this method, a perfusive particle with a sealing surface length ratio, L s ...
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