The pettern formation in a rotating suspension of 192 settling balls in a horizontally rotating cylinder
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A rotating suspension of 192 settling balls in a horizontally rotating cylinder
filled fully
by an incompressible viscous Newtonian fluid for 15 < t < 30: four clusters are forming.
- The whole cylinder is rotating with angular speed equal to 12.
- The length of the cylinder is 8 and its diameter is 1.
- The central axis of the cylinder is horizontal and the cylinder two ends are closed.
- The dimension of computational domain = (0,1+4h)x(0,8)x(0,1+4h).
- The diameter of balls = 0.15.
- The density of tha ball = 1.25.
- The density of fluid = 1; the viscosity = 0.15.
- The mesh size for the velocity field = 1/64.
- The mesh size for the pressure = 1/32.
- The time step=0.001.
- The averaged ball speed for 70 < t < 80 seconds is 4.27 (the particle Re=4.27)