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Search took 0.00 seconds. Search: Posts Made By: mgdenno
Forum: OpenFOAM March 29, 2013, 19:38
Replies: 55
Views: 24,229
Posted By mgdenno
I think what worked in my case was to initially...

I think what worked in my case was to initially use:

gradSchemes
{
default Gauss linear;
grad(U) cellLimited Gauss linear 1;
}

divSchemes
{
Forum: OpenFOAM October 26, 2012, 08:48
Replies: 55
Views: 24,229
Posted By mgdenno
I believe there are a few more recent versions...

I believe there are a few more recent versions available for Windows. I would suggest Googling it. The other option is to run a virtual machine with Linux on it. This approach ios covered on the...
Forum: OpenFOAM October 21, 2012, 09:24
Replies: 55
Views: 24,229
Posted By mgdenno
Hi ardjouna, You haven't really provided...

Hi ardjouna,

You haven't really provided enough information for me to help you. Perhaps you should have a look at this thread...
Forum: OpenFOAM February 25, 2012, 11:45
Replies: 55
Views: 24,229
Posted By mgdenno
Mohammad, Did you run checkMesh on your...

Mohammad,

Did you run checkMesh on your mesh? This program will check your mesh for problems. I would do this next.

I have used GMesh, snappyHexMesh and blockMesh to generate my meshes. The...
Forum: OpenFOAM February 24, 2012, 17:01
Replies: 55
Views: 24,229
Posted By mgdenno
Thanks Oliver. I think I will dive into goovyBC...

Thanks Oliver. I think I will dive into goovyBC this weekend.
Forum: OpenFOAM February 22, 2012, 13:58
Replies: 55
Views: 24,229
Posted By mgdenno
Mohammad, Have you run checkMesh on your...

Mohammad,

Have you run checkMesh on your mesh? That should give some idea if you have mesh problem. Do you have a picture showing your mesh (maybe a slice through your domain)?

MD
Forum: OpenFOAM February 22, 2012, 13:53
Replies: 55
Views: 24,229
Posted By mgdenno
Mohammad, I agree with what Oliver has said....

Mohammad,

I agree with what Oliver has said. Let us know how it goes.

Oliver,

You mentioned using groovyBC to control the water level at the inlet. I posted a question about this sometime...
Forum: OpenFOAM February 21, 2012, 09:42
Replies: 55
Views: 24,229
Posted By mgdenno
Mohammad, The download link is not working...

Mohammad,

The download link is not working for me, I think it is blocked for me.

Based on what I am seeing in your picture though, I have the following thoughts:

1. Is it possible that what...
Forum: OpenFOAM July 14, 2011, 14:47
Replies: 55
Views: 24,229
Posted By mgdenno
Hi JonW, I did as you suggested and started...

Hi JonW,

I did as you suggested and started a new simulation run (t=0) and set cAlpha = 0. Unfortunately the simulation still blows-up (it is still running but deltaT is getting very small...it...
Forum: OpenFOAM July 12, 2011, 15:58
Replies: 55
Views: 24,229
Posted By mgdenno
It is taking about an hour per second of...

It is taking about an hour per second of simulation to run. I am running it on a virtual machine running kubuntu that has 4 2.3 Ghz CPU and 8 GB ram allocated to it. I am not sure of the specifics...
Forum: OpenFOAM July 12, 2011, 13:36
Replies: 55
Views: 24,229
Posted By mgdenno
Hi Jon, Thanks for the input. I did as you...

Hi Jon,

Thanks for the input. I did as you suggested and set cAlpha = 0 and started the run. It takes a while to run, but I will post back when I know something.

I started the simulation back...
Forum: OpenFOAM July 11, 2011, 21:36
Replies: 55
Views: 24,229
Posted By mgdenno
Hello, Just to provide a little extra...

Hello,

Just to provide a little extra information, while I have some hesitation regarding the small "dry" areas at the walls, at time = 50 seconds the flow vs depth upstream of the weir is very...
Forum: OpenFOAM July 11, 2011, 14:33
Replies: 55
Views: 24,229
Posted By mgdenno
Hello Pablo and kumar, Thanks so much for...

Hello Pablo and kumar,

Thanks so much for your help so far. I really apprecieate it and I think we/I am making progress.

Pablo - I changed my fvSchemes as you suggested (I think). It is...
Forum: OpenFOAM July 10, 2011, 09:45
Replies: 55
Views: 24,229
Posted By mgdenno
Hi Pablo, Thanks for your help. I...

Hi Pablo,

Thanks for your help.

I believe that the mesh is OK. I have been using checkMesh and it says that it is OK...I am not sure what the most important result is other than it says it is...
Forum: OpenFOAM July 9, 2011, 22:08
Replies: 55
Views: 24,229
Posted By mgdenno
Hello, As suggested, I changed the outlet...

Hello,

As suggested, I changed the outlet pressure boundary condition to totalPressure to match the atmosphere (same parameters as the atmosphere patch. Is that what you had in mind kumar?,...
Forum: OpenFOAM July 7, 2011, 12:10
Replies: 55
Views: 24,229
Posted By mgdenno
Hi Kumar, Thanks for the tips. I will try...

Hi Kumar,

Thanks for the tips. I will try changing the outlet boundary condition and report back how it works out.

MD
Forum: OpenFOAM July 7, 2011, 09:11
Replies: 55
Views: 24,229
Posted By mgdenno
Also, I don't know if you need this information,...

Also, I don't know if you need this information, but the floor (bottom) of the domain is at elevation 1 m, the spillway crest is at elevation 4.66 m (so it is 3.66 m tall), the water level at the...
Forum: OpenFOAM July 7, 2011, 09:01
Replies: 55
Views: 24,229
Posted By mgdenno
Thank you both of you for your responses. ...

Thank you both of you for your responses.

I am using inletOutlet for the outlet, so yes effectively zeroGradient for flows out of the domain. My p_rgh and U files are below.

I tried to...
Forum: OpenFOAM July 6, 2011, 21:22
Replies: 55
Views: 24,229
Posted By mgdenno
Pablo, Thanks again for the idea,...

Pablo,

Thanks again for the idea, unfortunately it didn't fix the problem.

I included a few plots of the output; maybe they will mean more to you than they do to me. It seems to run fine for a...
Forum: OpenFOAM July 6, 2011, 15:53
Replies: 55
Views: 24,229
Posted By mgdenno
No, I haven't tried that, but I will now. ...

No, I haven't tried that, but I will now.

Thanks,

MD
Forum: OpenFOAM July 6, 2011, 13:51
Replies: 55
Views: 24,229
Posted By mgdenno
interFoam simulation blowing up

Hello All,

I am hoping someone here can provide some guidance for a simulation that I am trying to run. I am trying to analyze a Labyrinth Spillway using the interFoam solver. Attached are a few...
Showing results 1 to 21 of 21

 
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