The fifth example of this tutorial analyses a case of two-dimensional flow passing a cylinder in the low Reynolds range.
We choose a Reynolds number of Re = 100, for which we expect a vortex street in the wake of the cylinder (the well known von Kármán vortex street).
As in the two previous examples the geometry consists of a box that represents the control volume, which contains the body to be studied in this case the circular cylinder.
Flow passing a cylinder Viscous, turbulent case Reynolds number of 100 |
The Reynolds number is calculated as in the cavity flow example. In this case we chose for the characteristic length of the problem, L, the diameter D of the cylinder.
The example's parameters are
D = v = 1 m/s r = 1 kg/m3 m= 1 10-2 kg/ms |
This gives
Re = 100 |
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