Channel flow around moving circles

The following examples concern channel flow around two moving circles.

The aim of the following simulations is just to demonstrate the utility of our "Fictitious Boundary Conditions": All calculations are performed on ONE SINGLE mesh which does not change! The position of the actual boundary is determined via "filters" and incorporated into the iterative solvers! A more detailed description of the underlying mathematical and numerical concepts is given in Stefan Turek's CFD-book, Springer

The complexity of the physical problem depends on the:

• size of the balls and the channel
• inflow speed and speed of the balls
• viscosity parameter

A systematic variation of these different configurations is part of the following flow situations.

• "Moving Balls" at low Reynolds number
• "Moving Balls" (I) at medium Reynolds number
• "Moving Balls" (II) at medium Reynolds number