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Search took 0.00 seconds. Search: Posts Made By: Bottikowski96
Forum: Main CFD Forum May 24, 2023, 04:49
Replies: 22
Views: 951
Posted By Bottikowski96
I have simulated a 2D laminar channel flow...

I have simulated a 2D laminar channel flow without a forcing term, with no-slip BC and ∂p/∂x=1 (in form of the BC: p(x=0)=length of channel | p(x=l)=0). This delivers the correct results. Then, I...
Forum: Main CFD Forum May 23, 2023, 10:30
Replies: 22
Views: 951
Posted By Bottikowski96
But why will be the forcing term equivalent to...

But why will be the forcing term equivalent to the pressure gradient term in the NS equations? In the case of a laminar, steady, incompressible channel flow, u (velocity in x direction) is unequal to...
Forum: Main CFD Forum May 23, 2023, 10:12
Replies: 22
Views: 951
Posted By Bottikowski96
All right. Then, it would be possible to perform...

All right. Then, it would be possible to perform a simulation of a channel flow only with the no-slip conditions, because the forcing term causes the fluid to move?
Forum: Main CFD Forum May 23, 2023, 09:14
Replies: 22
Views: 951
Posted By Bottikowski96
Thanks again for your answers, I really...

Thanks again for your answers, I really appreciate that! I really want to be sure that I have understood everything, so I have a further question regarding the BC. I would use the following BC for a...
Forum: Main CFD Forum May 23, 2023, 04:42
Replies: 22
Views: 951
Posted By Bottikowski96
@sbaffini: So, I need periodic BC in streamwise...

@sbaffini: So, I need periodic BC in streamwise and spanwise directions and no-slip conditions at the wall, right? What about the pressure, do I need a BC for it e.g. p=0 at the outlet? Moreover, I...
Forum: Main CFD Forum May 22, 2023, 02:49
Replies: 22
Views: 951
Posted By Bottikowski96
And what is the outcome of the periodic BCs in...

And what is the outcome of the periodic BCs in streamwise and spanwise directions? Are they used to saying the flow repeats in those directions?
Forum: Main CFD Forum May 19, 2023, 18:00
Replies: 22
Views: 951
Posted By Bottikowski96
Okay, I got it. Thanks for your help!

Okay, I got it. Thanks for your help!
Forum: Main CFD Forum May 19, 2023, 08:37
Replies: 22
Views: 951
Posted By Bottikowski96
Thanks for you answer. But does it mean that I...

Thanks for you answer. But does it mean that I have to define a pressure value at the inlet and outlet to get a pressure gradient?
Forum: Main CFD Forum May 19, 2023, 07:56
Replies: 22
Views: 951
Posted By Bottikowski96
Boundary Conditions of Turbulent Channel Flow (DNS)

Hello together,

I am trying to simulate a turbulent channel flow without an inlet velocity. Therefore, I read some references and where it states that the simulations use forcing by a constant...
Showing results 1 to 9 of 9

 
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