Two balls interact in a bounded shear flow: non-swapping trajectories
Two balls pass under/over each other in a bounded shear flow of a Newtonian fluid under creeping conditions.
The mass centers return to their initial heights, respectively, after passing each other.
- The dimension of computational domain = (-1.5, 1.5)x(-1,1)x(-0.5,0.5).
- The radii of the balls are 0.1.
- The density of the balls = 1.
- The density of fluid = 1.
- The viscosity = 1.
- The shear rate = 1.
- Top wall moves and the bottom wall is at rest .
- The initial mass centers are at (-0.5, 0, 0.0316) and (0.5, 0, -0.0316), respectively.
- The mesh size for the velocity field = 1/48
- The mesh size for the pressure = 1/24
- The time step=0.001.