Forum: OpenFOAM Running, Solving & CFD
October 11, 2010, 03:08
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Replies: 34
Views: 10,493
Hello FOAMers,
I need one more suggestion on...
Hello FOAMers,
I need one more suggestion on the turbulence model.
As I said before, for the case I am simulating:
In order to crosscheck if this is correct, I calculated y+ at the last time...
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Forum: OpenFOAM Running, Solving & CFD
October 4, 2010, 05:21
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Replies: 34
Views: 10,493
Hi,
I opened a new thread on the subject:...
Hi,
I opened a new thread on the subject: http://www.cfd-online.com/Forums/openfoam/80628-how-model-fan-fixing-mass-flow-rate.html.
However, you are my two gurus on the closed loop pipe flow...
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Forum: OpenFOAM Running, Solving & CFD
October 1, 2010, 02:19
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Replies: 34
Views: 10,493
Hello,
Well, this is a solution as well, but...
Hello,
Well, this is a solution as well, but I think this is not "clever". If I would do that, every time I change the geometry I should calculate the new pressure jump to keep mass flow rate...
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Forum: OpenFOAM Running, Solving & CFD
September 30, 2010, 11:32
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Replies: 34
Views: 10,493
Hi everyone,
I finally got my simulations...
Hi everyone,
I finally got my simulations running (including turbulence), and everything went nice with the first case that I described in the previous posts. :)
Then I change geometry (refer to...
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Forum: OpenFOAM Running, Solving & CFD
September 21, 2010, 04:14
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Replies: 34
Views: 10,493
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Forum: OpenFOAM Running, Solving & CFD
September 20, 2010, 05:31
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Replies: 34
Views: 10,493
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Forum: OpenFOAM Running, Solving & CFD
September 20, 2010, 04:06
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Replies: 34
Views: 10,493
Hi Alberto,
just to understand what I am...
Hi Alberto,
just to understand what I am doing...
I am used to to that... I misread fvSolution... :o
The pressure relTol or every relTol? What does this mean? That I will accept the iteration...
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Forum: OpenFOAM Running, Solving & CFD
September 17, 2010, 11:10
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Replies: 34
Views: 10,493
Hello,
finally I have my simulation running! ...
Hello,
finally I have my simulation running!
the mesh is not perfect: about 4000 non-orthogonal cells out of 600000. However, I want to keep the cell number "low" to understand how to set up...
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Forum: OpenFOAM Running, Solving & CFD
September 14, 2010, 05:46
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Replies: 34
Views: 10,493
Hello.
Sure it has. First I define the line...
Hello.
Sure it has. First I define the line mesh, then it creates the surface mesh which has max dimension as the max dimension of its generating lines. With the same criteria, I can assemble...
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Forum: OpenFOAM Running, Solving & CFD
September 14, 2010, 02:34
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Replies: 34
Views: 10,493
Good morning!
Mmm... Ok so I can lower the...
Good morning!
Mmm... Ok so I can lower the prism layer number on the small pipe to improve my pipe mesh. However, the main problem is with the junction.
Not sure of what you mean...Is that a sort...
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Forum: OpenFOAM Running, Solving & CFD
September 13, 2010, 16:50
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Replies: 34
Views: 10,493
Hello,
I am using a commercial software,...
Hello,
I am using a commercial software, Pointwise. On the small pipe, I have a prism layer 8 cells thick and a tetra "core". The quality is not really high, but still acceptable. On the other two...
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Forum: OpenFOAM Running, Solving & CFD
September 13, 2010, 11:03
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Replies: 34
Views: 10,493
Ok, summarizing:
the flow is fully...
Ok, summarizing:
the flow is fully turbulent -> no laminar transition -> no modification to the LaunderSharmaKE coefficients, whose have already been chosen as a low-Re turbulence model.
...
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Forum: OpenFOAM Running, Solving & CFD
September 13, 2010, 03:06
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Replies: 34
Views: 10,493
Hello,
My first post and discussion on the...
Hello,
My first post and discussion on the use of nutLowReWallFunction is based on this (http://www.cfd-online.com/Forums/openfoam-bugs/62339-compressible-komegasst-3.html#post265758) post. Maybe...
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Forum: OpenFOAM Running, Solving & CFD
September 13, 2010, 03:00
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Replies: 34
Views: 10,493
Hi Alberto,
and thanks for your quick and...
Hi Alberto,
and thanks for your quick and useful answer (as usual). You are one of the few expert member that helps the younger to address their question and gain their experience in this forum, and...
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Forum: OpenFOAM Running, Solving & CFD
September 10, 2010, 05:12
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Replies: 34
Views: 10,493
Closed loop pipe flow
Hello everybody,
for the first time I am dealing with pipe flow and I need some ideas and suggestions on how to set up my case properly.
I have a closed loop cooling system, where air passes...
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