2D Fluidized Bed of 240 circular particles:
Here we present numerical simulation of 2D fluidized bed of 240
circular particles in a rectangular channel obtained by a distributed
Lagrange multipliers/fictitious domain method.
Geometry, parameters, initial and boundary conditions:
- The in-flow condition (resp., out-flow condition) at the
bottom (resp., top) of the channel is quasi-uniform, i.e., velocity field is
(0,U(t)) with given U(t). On two vertical sides
we choose no-slip boundary conditions.
- The x and y dimensions of a closed channel are 3.2 and 16 inches.
- Circular particles are initially located at given positions called crystal configuration.
- Radii of 240 circular particles are 0.125 inch.
- The density of particle is 1.14.
- The density of fluid is 1.
- The viscosity of fluid is 0.01.
- At the beginning, fluid and particles are at rest. U(t) is an increasing
function and reaches U in a short a period of time.
Video Animation:
- U=0.25: particles barely
move up and repacking process is undergoing.
- U=0.3: particles
move up and down. Repacking process is still undergoing.
- U=1.0: particles move up
and fluidize.
- U=1.5: particles move up
and fluidize.
Date of last change: February 2, 1998