Abstract
A stochastic approach that uses a modified Langevin equation to calculate fluid velocities seen by particles dispersing in a turbulent flow was verified at Re τ =150, V T +=0.11, τ p +=20 in Part 1 of this paper. It is now used to examine the effects of particle inertia and gravitational settling on the deposition rate at Re τ =590. The system considered is an idealized annular flow in a horizontal channel. Drops are admitted from the top and the bottom walls at relative rates such that a fully-developed field is realized. The walls are considered to be arrays of point sources. The theoretical problem is to model the behavior of an instantaneous wall source. Particles are ejected from the source with a velocity V i 0 at time zero. They are mixed by the fluid turbulence and eventually deposit at the top and bottom walls. Of particular interest are the strong effect of very small gravitational settling on the rate of deposition and the definition of a critical condition for particles (ejected from the bottom wall) to reach the top wall to create an annular flow.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
