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Forum: OpenFOAM Running, Solving & CFD November 3, 2015, 10:12
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Hi, I can now help you with your boundary...

Hi,

I can now help you with your boundary condition settings if you still require?

Kind regards,

James
Forum: OpenFOAM Running, Solving & CFD September 9, 2014, 09:03
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Yes, using this mesh with fluent we got quite...

Yes, using this mesh with fluent we got quite reasonable results.

(Please see my post above dated August 21, 2014, 16:53)

The top contour plot is the RANS simulation that I am trying to...
Forum: OpenFOAM Running, Solving & CFD September 9, 2014, 07:20
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Dear Tom, Thank you again for your response....

Dear Tom,

Thank you again for your response. I am currently running some tests using these settings.

Can I make a further request for some advice?

Using these boundary condition settings at...
Forum: OpenFOAM Running, Solving & CFD September 2, 2014, 07:22
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Hi Tom, Thank you for answering my request. ...

Hi Tom,

Thank you for answering my request.
Referring back to my simulation (as outlined in the 4th post of this thread, pic of domain attached below, domain dimensions = L x W x H = 18 x 7 x...
Forum: OpenFOAM Running, Solving & CFD August 22, 2014, 05:59
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
I guess at the moment my only comment would be to...

I guess at the moment my only comment would be to play with the usual variables (i.e. relaxation factors, time-step)

Also, are you fully implementing your final release velocity? I've found it can...
Forum: OpenFOAM Running, Solving & CFD August 21, 2014, 11:53
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
It all depends on what you're trying to achieve...

It all depends on what you're trying to achieve and what you're interested in.

In LES: the larger 3D unsteady turbulent motions are directly solved. The effect of the smaller scale motions are...
Forum: OpenFOAM Running, Solving & CFD August 21, 2014, 10:02
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
What I meant by providing these papers to you was...

What I meant by providing these papers to you was more to refer to the set up of the inlet rather than the solver being used, i.e "the injection system is modeled using a simple gas injector through...
Forum: OpenFOAM Running, Solving & CFD August 20, 2014, 13:39
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Looking at your boundary conditions, in your...

Looking at your boundary conditions, in your previous posts are you not including all you "open" boundaries. You seem to have only one outlet set following the settings from Tom. Have you only...
Forum: OpenFOAM Running, Solving & CFD August 20, 2014, 13:19
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
You may want to look that the following papers,...

You may want to look that the following papers, the simulations carried out in these seem to be applicable to you work:

V. Vuorinen et al. "Large-eddy simulation on the effect of injection...
Forum: OpenFOAM Running, Solving & CFD August 20, 2014, 13:00
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Regarding your turbulence query, I'm curious what...

Regarding your turbulence query, I'm curious what are your boundary condition settings for k and epsilon?

If you are not already you could try:

for k = turbulenceIntensityKineticEnergyInlet...
Forum: OpenFOAM Running, Solving & CFD August 20, 2014, 12:50
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Dear Joao, I am glad that you simulation is...

Dear Joao,

I am glad that you simulation is now running without crashing.

Could you please further expand on your statement:

"But some initial waves are still reflected by the outlet, what I...
Forum: OpenFOAM Running, Solving & CFD August 20, 2014, 05:53
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Dear Tom, Thank you for responding. ...

Dear Tom,

Thank you for responding.

May I ask:

1) Why do you have N2 set as 'calculated' rather than 'inletOutlet'?

2) Have you successfully completed a simulation which is similar to...
Forum: OpenFOAM Running, Solving & CFD August 12, 2014, 06:30
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Dear Joao, I'm not sure if you comment was...

Dear Joao,

I'm not sure if you comment was directed at me, however I will comment.

Unfortunately I am still in the process of trying to solve my problems around the boundary condition settings...
Forum: OpenFOAM Running, Solving & CFD August 6, 2014, 12:28
Replies: 39
Views: 13,759
Posted By ni-openfoam-user
Boundart conditions

Hi foamer,

Just wondering if you ever solved your boundary conditions problems? So you maybe please post your working "0" folder?

I am currently trying to simulate a high pressure hydrogen...
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