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Forum: OpenFOAM Running, Solving & CFD

April 18, 2022, 12:42

Replies: 68

LES turbulent pipe flow

Views: 30,858

Posted By Tobermory

The magnitude of Q will be tied in to the...

The magnitude of Q will be tied in to the characteristic velocity and lengthscales of the flow problem that you are solving. However, for the current purposes, the precise value is not important -...

Forum: OpenFOAM Running, Solving & CFD

July 6, 2021, 14:34

Replies: 68

LES turbulent pipe flow

Views: 30,858

Posted By Tobermory

By the way - I found that plotting Q isocontours...

By the way - I found that plotting Q isocontours alongside contour plots of streamwise and spanwise velocity just off the wall was a good way of keeping track of what was going on. You could tell...

Forum: OpenFOAM Running, Solving & CFD

July 6, 2021, 04:57

Replies: 68

LES turbulent pipe flow

Views: 30,858

Posted By Tobermory

Yes, but for my case I had to ramp up the...

Yes, but for my case I had to ramp up the strength of the perturbations, ie. play with the coefficients (I boosted duplus by a factor of 2 and eps by a factor of 4 I think). I think that was...

Forum: OpenFOAM Running, Solving & CFD

July 5, 2021, 09:44

Replies: 68

LES turbulent pipe flow

Views: 30,858

Posted By Tobermory

Probably because it is simple to define the...

Probably because it is simple to define the laminar profile, and to make sure that it's in balance with the background pressure gradient. You can apply whatever you want though - for example, I have...

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