Re: Fluctuations in velocity profile at inlet for turbulent channel flow setup

[ishaandesai]

Hey Marc,

thanks for the explanation. I now understand what you are suggesting but am having difficulty in correlating how this would represent my channel flow. In the Poisuelle example, using periodic boundaries in streamwise direction makes sense if you wish to simulate a portion of pipe/channel after the developing length. If I give periodicity in my case and also specify the value of pressure drop between inlet-outlet, it is as good as simulating a flow beyond the developing length, which I do not know in my duct case as the geometry is not very simple. This is my difficulty, please correct me if there is any gap in physical understanding. I wish to simulate real flow and see the behavior as in transition state as it is going towards a steady state.