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Search: Posts Made By: lakeat
Forum: OpenFOAM Running, Solving & CFD July 11, 2014, 11:45
Replies: 2
Views: 569
Posted By lakeat
I saw a similar error these days. Have you found...

I saw a similar error these days. Have you found an answer?
Forum: OpenFOAM Post-Processing July 9, 2014, 11:11
Replies: 0
Views: 215
Posted By lakeat
Off-Screen Rendering Test

Hi all,

I am trying to do a an offscreen rendering test, I am wondering if anyone could give it a try and see if it works on your system? Thanks. This is for offscreen rendering your velocity...
Forum: OpenFOAM Running, Solving & CFD June 16, 2014, 12:05
Replies: 0
Views: 176
Posted By lakeat
Contribute a forceCoeffs monitoring, plotting and merging utility

Dear All,

I'd like to share my small force coefficient merging/plotting utility with you. It can plot and merge and write out a postscript file. The merge function is quite useful in many...
Forum: OpenFOAM Meshing & Mesh Conversion April 23, 2014, 09:44
Replies: 13
Views: 1,441
Posted By lakeat
Thanks, I'd like to but I just don't have time. :)

Thanks, I'd like to but I just don't have time. :)
Forum: OpenFOAM Running, Solving & CFD April 8, 2014, 15:02
Replies: 10
Views: 238
Posted By lakeat
I don't think I have used that option, I just use...

I don't think I have used that option, I just use "-O2 -no-prec-div", of cause I tried "-O3" as well.


Well, I am not ready to piss them off :). But I don't see a reason that our cluster...
Forum: OpenFOAM Running, Solving & CFD April 8, 2014, 11:14
Replies: 10
Views: 238
Posted By lakeat
OOPS, can anyone verify by running a small test...

OOPS, can anyone verify by running a small test on your computer.

Copy the cavity case from your tutorial and refine the mesh to 1000*1000*1, change deltaT to 2e-5 and endtime to 1e-3, and keep...
Forum: OpenFOAM Running, Solving & CFD April 8, 2014, 11:06
Replies: 10
Views: 238
Posted By lakeat
(1) decomposition method scotch, but I have tried...

(1) decomposition method scotch, but I have tried simple with (32*1*1) and the final residuals are still different.

(2) 4 core: it is on my personal workstation. 16-core it's running on a high...
Forum: OpenFOAM Running, Solving & CFD April 8, 2014, 10:54
Replies: 10
Views: 238
Posted By lakeat
It is exactly the same case copied from the...

It is exactly the same case copied from the tutorial icoFoam cavity. The only difference is the original mesh is 20*20, now I refine it to 1000*1000. The fvScheme settings are also the same. Boundary...
Forum: OpenFOAM Running, Solving & CFD April 8, 2014, 10:05
Replies: 10
Views: 238
Posted By lakeat
I've never had success in using PCG solver in...

I've never had success in using PCG solver in parallel, it blows always.

Using a smaller rolerance, p 1.0e-6, U 1.0e-5, as you can see below, the number of iterations has not exceed the maximum...
Forum: OpenFOAM Running, Solving & CFD April 7, 2014, 17:51
Replies: 10
Views: 238
Posted By lakeat
Same case run twice I got different results, what's going wrong?

I ran a cavity case with icoFoam in parallel using 32 cores (i.e. two nodes) twice, but I got different results. By saying "different", I mean the log file shows residual difference.

log-1:

...
Forum: OpenFOAM Programming & Development March 21, 2014, 17:38
Replies: 7
Views: 324
Posted By lakeat
4th level, let them. But as a top level folder,...

4th level, let them. But as a top level folder, it does not look very "organized". Sorry, maybe it's just my personal opinion, :)
Forum: OpenFOAM Programming & Development March 21, 2014, 17:23
Replies: 7
Views: 324
Posted By lakeat
I am 100% okay with files (you explained it very...

I am 100% okay with files (you explained it very well), but as top-level source folders under src/, hmm, sorry, I just can't get it, I don't think it's a good practice. :)
Forum: OpenFOAM Programming & Development March 21, 2014, 16:24
Replies: 7
Views: 324
Posted By lakeat
Thanks! But with all due respect, I still feel...

Thanks! But with all due respect, I still feel putting two identical names (except letter "T") under the same src/ folder is not a good idea.
Forum: OpenFOAM Programming & Development March 21, 2014, 15:28
Replies: 7
Views: 324
Posted By lakeat
What's the reason of two turbulencemodels folder?

What's the reason of two turbulenceModels folder? What's the philosophy behind this new folder restructuring?
Forum: OpenFOAM Meshing & Mesh Conversion March 10, 2014, 14:59
Replies: 13
Views: 1,441
Posted By lakeat
Hi everyone, you may find the download link on...

Hi everyone, you may find the download link on http://lakeat.co.nf/. :)
Forum: OpenFOAM Meshing & Mesh Conversion February 27, 2014, 16:41
Replies: 13
Views: 1,441
Posted By lakeat
hyperbolic extrusion is definitely the thing I...

hyperbolic extrusion is definitely the thing I would do in the near future. But not hybrid for the time being. Currently my goal is solely for academic, so converter to other non-FOAM mesh format...
Forum: OpenFOAM Meshing & Mesh Conversion February 24, 2014, 21:56
Replies: 13
Views: 1,441
Posted By lakeat
Sorry, I don't have this plan for the moment. I...

Sorry, I don't have this plan for the moment. I am now rewriting the whole code all over again to handle multi-blocks. So hopefully, it will be at least a good alternative of OpenFOAM's native...
Forum: Site Help, Feedback & Discussions February 8, 2014, 21:19
Replies: 1
Views: 1,069
Posted By lakeat
What does "Moderated Blog Entry" mean?

What does "Moderated Blog Entry" mean?

PS: Please give details, like approval time, judging rules and when would a user to be able to become a golden user so that blog entry check doesn't need...
Forum: Pointwise & Gridgen February 3, 2014, 12:44
Replies: 9
Views: 986
Posted By lakeat
Thank you David. But I still don't know how to...

Thank you David. But I still don't know how to set the boundary condition for a baffle? (As I have mentioned in post #5) This seems to have nothing to do with OpenFOAM. Let's me give an simple...
Forum: Pointwise & Gridgen January 30, 2014, 16:40
Replies: 9
Views: 986
Posted By lakeat
Hi Chris, In order to generate a mesh for...

Hi Chris,

In order to generate a mesh for OpenFOAM with baffles, I have to extrude the 2D mesh in the 3rd direction. And then export the CAE. But now, it seems to me that the extrusion does not...
Forum: Pointwise & Gridgen January 30, 2014, 15:16
Replies: 3
Views: 403
Posted By lakeat
Yes, ubuntu here. Never mind, I can select CAE...

Yes, ubuntu here. Never mind, I can select CAE ahead to avoid the segv fault :rolleyes:
Forum: Pointwise & Gridgen January 30, 2014, 14:39
Replies: 3
Views: 403
Posted By lakeat
Where to report (possible) bugs?

dd@uuu:~$ pointwise -version
Pointwise V17.1R4
dd@uuu:~$ pointwise
Segmentation fault (core dumped)
dd@uuu:~$ pointwise
Segmentation fault (core dumped)
dd@uuu:~$ pointwise
Segmentation...
Forum: Pointwise & Gridgen January 30, 2014, 13:50
Replies: 3
Views: 442
Posted By lakeat
Thanks, I see. I used to write the mesh to the...

Thanks, I see. I used to write the mesh to the vtk then to the postscript, it seems to be not very difficult.
Forum: Pointwise & Gridgen January 30, 2014, 12:53
Replies: 9
Views: 986
Posted By lakeat
I made it. 28359 Hmm, I am confused now...

I made it.
28359

Hmm, I am confused now how to convert the t-rex mesh to prisms, why it is always in grey. Did I miss something here?

PS: Are there any macros available that can build quickly...
Forum: Pointwise & Gridgen January 30, 2014, 11:52
Replies: 3
Views: 442
Posted By lakeat
ps export?

I found the quality of the figures in the manuals are really low, are they created by ms-word? Not latex? :) Anyone knows how to export "publication quality" vector figures?
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