(221j) Particle Migration in Confined Channel
AIChE Annual Meeting
2019
2019 AIChE Annual Meeting
Engineering Sciences and Fundamentals
Poster Session: Fluid Mechanics
Monday, November 11, 2019 - 3:30pm to 5:15pm
Particulate flows find application in many engineering processes. In case of flow in a confined
channel, when particle concentration is very low, the particles are observed to undergo a cross stream
migration and then equilibrate to an off center position. This phenomena is known as inertial
migration. Such a migration takes place even at a very low particle Reynolds number. In the present
work, we have investigated such migration using Immersed Boundary Method (IBM) for various
Reynolds number, and particle properties. In this method the fluid part is modeled through Navier-
Stokes equation and the solid particles are represented as immersed body. The displacement and
rotation of such immersed object is then obtained from the drag force and torque exerted on the body.
The results obtained from the simulations are being validated using using Particle Image Velocimetry
(PIV). The fluid flow around the particle can be obtained by adding tracer particle in fluid and
subsequent application of image separation technique between the images of tracer particle and the
focused particle (larger in size). PIV and PTV technique are being used to get the fluid and particle
dynamics respectively. We are also interested to predict the trains of particle and inter-particle
equilibrium distance.
channel, when particle concentration is very low, the particles are observed to undergo a cross stream
migration and then equilibrate to an off center position. This phenomena is known as inertial
migration. Such a migration takes place even at a very low particle Reynolds number. In the present
work, we have investigated such migration using Immersed Boundary Method (IBM) for various
Reynolds number, and particle properties. In this method the fluid part is modeled through Navier-
Stokes equation and the solid particles are represented as immersed body. The displacement and
rotation of such immersed object is then obtained from the drag force and torque exerted on the body.
The results obtained from the simulations are being validated using using Particle Image Velocimetry
(PIV). The fluid flow around the particle can be obtained by adding tracer particle in fluid and
subsequent application of image separation technique between the images of tracer particle and the
focused particle (larger in size). PIV and PTV technique are being used to get the fluid and particle
dynamics respectively. We are also interested to predict the trains of particle and inter-particle
equilibrium distance.