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 CFDbook, Springer The complexity of the physical problem depends on the:
A systematic variation of these different configurations is part of the following flow situations. 

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