Two ellipsoids sediment in a 2D-like channel filled with an incompressible viscous fluid:

• the dimension of computational domain = (0,1)x(0,0.25)x(0,4) initially, then it moves vertically with the center of the lower one
• Three semi-axes are 0.1, 0.1 and 0.23.
• the density of ellipsoids = 1.25
• the density of fluid = 1
• the viscosity = 0.01
• the mesh size for the velocity field = 1/112
• the mesh size for the pressure = 1/66
• the time step=0.001
• The averaged speed is 4.77 for 8 < t < 10.
• The averaged particle Reynolds number is 219.42 based on the length of the longest axis (which is 0.46).