Results for unsteady simulations ( Re = 100 )
Vorticity at t=0

Vorticity at t=50

Vorticity at t=100

Vorticity at t=150

Vorticity at t=200

Vorticity at the node point 5675 (a point behind cylinder)



Shedding frequency 

The period for the oscillations, T = 5.29 dimensionless time units.

Therefore the Strouhal number is: D/(UT) = 0.19

This compares well with experimental value of 0.17 (e.g., J.A. Roberson and C.T. Crowe,
Engineering Fluid Mechanics, 6th ed., pp. 436).

Conclusion: although the computaton domain size is not large enough and the intensity of
the vortex shedding is not realistically strong, the shedding frequency is reasonablly
simulated.


How to start a run with initial field specified as the last field of a previous run? 
/ change *.FDPOST to *.FDREST
/ and then
ICNO (VELO, READ)
/


How to improve the solution? 
Use a larger computational domain.

Use more mesh points.

Design a better mesh pattern.
Larger domain

Vorticity at the node point 6954 (a point behind cylinder)

Vorticity at t=50

Vorticity at t=100

Vorticity at t=200



How to improve the solution? 

Use a larger computational domain.

Use more mesh points.

Design a better mesh pattern.
Larger domain

Vorticity at the node point 6954 (a point behind cylinder)

Vorticity at t=50

Vorticity at t=100

Vorticity at t=200