Aerosols Coulomb forces

In the derivations of the above equations, image forces (which are likely to be small compared to the Coulomb forces) were neglected and every collision was assumed to result in adhesion. Although some have questioned the validity of the latter assumption, there is no evidence to indicate that this is not, at least nominally, the case when dealing with particles smaller than 10 microns colliding at low velocities. While this subject of adhesion has never been investigated systematically, the bulk of all the data on aerosol flocculation and deposition would imply that for these conditions adhesion... 

Brownian Coagulation Dynamics of Discrete Distribution for an Initially Monodisperse Aerosol 192 Brownian Coagulation Effect of Particle Force Fields 196 Effect of van der Waals Forces 197 Effect of Coulomb Forces 200 Collision Frequency for Laminar Shear 200 Simultaneous Laminar Shear and Brownian Motion 202 Turbulent Coagulation 204... 

A cloud is essentially an aerosol with mobile boundaries. The stability of a cloud involves two distinct aspects. Because of Coulomb, image, and diffusion forces, particles in a given volume will flocculate. This will result... 

This is Coulomb s law. The units for charge, field strength, and force are made compatible by specifying the units of the factor of proportionality -y. For example, if y = 4-ir/e, where e is the dielectric constant of the medium, the units are in terms of cgs or absolute electrostatic system (esu). Since the dielectric constant for air is essentially 1, for aerosols using the cgs system of units, -y = 4u. 

For hydrosols in gremular filtration, the external force consists of gravitational force, particle-collector surface interaction forces, such as the unretarded London attraction force (defined in (3.1.16)) and electrokinetic force (3.1.17) in the double layer, and electrostatic forces, if any, such as coulombic attraction/repulsion forces (3.1.15) (usually important in aerosol-removal processes unless the collector particles are deliberately charged). In... 

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