Attachment Efficiency of Polydisperse Nanoparticles                    Wall-Deposition

The collision efficiency of Brownian coagulation for monodisperse nanoparticles is considered. A new expression for friction coefficient of particle pair is proposed based on an assumption from a statistical point of view and the relative diffusion coefficient is thus be modified in order to take into account this influence as well as the effects of slip. The modified diffusion coefficient increases the collision efficiency to some extent as expected whether van der Waals interparticle potential is considered or not. A comparison with experimental measurements shows the accuracy of the results predicted by modified theory and the necessity of considering the decrease of friction coefficient due to the random motion of nanoparticles as well as the slip effects arising from the finite mean free path of gas molecules.

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Attachment Efficiency of Polydisperse Nanoparticles Wall-Deposition

Abstract: The attachment efficiency when nanopartiles contact with a flat smooth wall is investigated by taking the elastic deformation force, van

Cited by 3 publications

References 33 publications

A review of research on nanoparticulate flow undergoing coagulation

A review of research on nanoparticulate flow undergoing coagulation

Effects of higher wall roughness on dense particle–laden dispersion behaviors

Collision Efficiency of Brownian Coagulation for Nanoparticles Taking Into Account the Slip Boundary Condition on the Particle Surface

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