One circular particle sedimentation:

To test collision strategy, we consider a 2D numerical simulation of one circular particle in a rectangular channel obtained by a distributed Lagrange multipliers/fictitious domain method.

Geometry, parameters, initial and boundary conditions:

• We choose no-slip boundary conditions on the boundary of this close channel.
• The x and y dimensions of a closed channel are 3.2 and 15.25 inches.
• The circular particle is initially located at given position (0.8", 15").
• The radius of the circular particle is 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.

Video Animation