A Settling Ellipsoid in an Oldroyd-B fluid:
![[Animation]](1.jpg)
A long body like ellipsoid turns its broadside to the sedimenting direction in Oldroyd-B fluid
as shown in the animation.
- The dimension of computational domain = (0,1)x(0,1)x(0,4) initially,
then it moves vertically with the center of the ellipsoid.
- The semi-axis of the ellipsoid are 0.125, 0.0625 0.0625.
- The density of ellipsoid = 1.02
- The density of fluid = 1
- The viscosity = 0.26
- The relaxation time = 1
- The retardation time = 1/8
- The mesh size for the velocity field = 1/64
- The mesh size for the extra stress tensor = 1/64
- The mesh size for the pressure = 1/32
- The time step=0.001
- The averaged terminal speed =0.1027
- The particle Reynolds number = 0.09874 < 1
- The Mack number = 0.2014 < 1
- The Debra number = 0.4108
- The elasticity number = 4.16