[dan234]

Hi,

I am performing aAny help would be greatly appreciated.

[FMDenaro]

Originally Posted by dan234

Hi,

I am performing a CFD experiment on a square cylinder and in my results there is a graph of pressure vs time. Attachment 52063 It takes a while for the repeating nature of the oscillations to occur.Does anyone know why this is and why there is large fluctuation at the beginning.


Any help would be greatly appreciated.

Dan

As you can see fro the plot, the initial stage is only representative of a numerical transient and do depend on the initial condition. You should run more the code to let the solution forget the initial condition and get a fully developped physical oscillating solution.