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February 29, 2012, 18:15 |
waves2Foam waveFlume reflections
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#1 |
New Member
Betsy Seiffert
Join Date: Feb 2011
Location: Honolulu, HI
Posts: 11
Rep Power: 15 |
Hello - I have just installed the waves2Foam library on OFv2.1.1 and have run the tutorial waveFlume. The wave appears linear at the beginning but soon there is a reflected wave that distorts the incoming wave. The video is here: http://youtu.be/VwNF65Fkdbo
Can anyone offer an explanation or a fix?? Thank you, Betsy |
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February 29, 2012, 21:55 |
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#2 |
New Member
Betsy Seiffert
Join Date: Feb 2011
Location: Honolulu, HI
Posts: 11
Rep Power: 15 |
Ok, I have extended the domain length and it appears the left running wave interfering with the right running wave is not a reflection. Here is a video: http://youtu.be/yfZ1eXDDa4s
Again, I'm not sure what is causing this. Any help is appreciated. Thanks, Betsy |
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February 29, 2012, 23:14 |
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#3 |
Senior Member
Dave
Join Date: Jul 2010
Posts: 100
Rep Power: 16 |
Betsy,
Your wave's amplitude appear to be quite large relative to the wave length which may mean that linear wave theory might not be the best choice. Try running smaller wave amplitudes and see if the behavior persist. I have not had any issues with strange behavior in that tutorial for reasonable amplitudes. Dave |
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March 1, 2012, 03:40 |
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#4 | |
Senior Member
Niels Gjoel Jacobsen
Join Date: Mar 2009
Location: Copenhagen, Denmark
Posts: 1,903
Rep Power: 37 |
Hi Betsy
What you see is exactly caused by the large amplitude linear wave in shallow waters. The explanation is as follows: Quote:
@article { jacobsenFuhrmanFredsoe2011, Author = {Jacobsen, N G and Fuhrman, D R and Freds\o{}e, J}, title = {{ A Wave Generation Toolbox for the Open-Source CFD Library: OpenFoam\textregistered{} } }, Journal = {{ Int. J. Numerl. Meth. Fluids} }, Year = {In print}, Volume = {}, Pages = {}, DOI = {{10.1002/fld.2726} }, } If you choose stokesSecond instead, you should experience that the rate of energy exchange decreases, since the spurious waves generated will be of third order. Kind regards, Niels |
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March 1, 2012, 20:17 |
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#5 |
New Member
Betsy Seiffert
Join Date: Feb 2011
Location: Honolulu, HI
Posts: 11
Rep Power: 15 |
Yes, this makes sense. Thank you both for your replies.
Betsy |
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August 24, 2013, 05:48 |
An error in waveFlume test of waves2Foam
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#6 |
New Member
rz
Join Date: Mar 2012
Posts: 25
Rep Power: 0 |
Hy guys,
I tried to run the tutorial waveFlume from waves2Foam. I run blockMesh and the mesh generated successfully. Now I want to see the mesh by paraview and after typing: paraFoam I got this error : WARN file does not exist: ./system/fvSchemes ./system/fvSolution created temporary 'waveFlume.OpenFOAM' Application asked to unregister timer 0x63000017 which is not registered in this thread. Fix application. My OpenFOAM version is 2.1.1. Would you tell me how can I fix this error? Thanks |
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August 24, 2013, 05:52 |
waves2Foam
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#7 |
New Member
rz
Join Date: Mar 2012
Posts: 25
Rep Power: 0 |
Hi guys,
Is there a user guide for using waves2Foam? |
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August 24, 2013, 06:53 |
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#8 |
Senior Member
Niels Gjoel Jacobsen
Join Date: Mar 2009
Location: Copenhagen, Denmark
Posts: 1,903
Rep Power: 37 |
Hi,
The only thing around would be the forum and especially this thread: http://www.cfd-online.com/Forums/ope...ed-topics.html and the wiki-page http://openfoamwiki.net/index.php/Contrib/waves2Foam Kind regards Niels
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waveflume, wavefoam, waves2foam |
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