On the Theoretical Calculation of the Particle Eddy Diffusivity and Deposition Velocity in Fully Developed Turbulent Pipe Flow

Abstract

The model for particle motion in turbulent pipe flow is proposed and particle eddy diffusivity and deposition velocity to the wall are calculated.
It is assumed in this model that aerosol particles move at random to radial direction under the influence of fluctuation of fluid, and in addition that transverse lift force induced by shear flow has also an effect on particle motion near the wall.
It is difficult to calculate the particle deposition velocity without serious assumption in earlier methods, while this method is largely free of the assumption.
Calculation results are in approximate agreement with experiments.