[waves2Foam] wave dissipation a long of x wave flume

MehdiCFD · July 17, 2017, 12:25

hello everybody,

i m running a wave flume case with waveFoam solver and i did a mesh refinement study, but the problem that i couldn't inderstand is that when i refine mesh to have dx=L/100 and dz=H/28 the wave height decrease along x direction can someone explain me this phenomena.

best regards,
Mehdi

ngj · July 17, 2017, 14:00

Good afternoon,

@Mehdi: You are not providing nearly enough information. Try to read your own message and see, whether you - based on that information alone - can help yourself? This is how people will read your question.

Kind regards,

Niels

MehdiCFD · July 18, 2017, 05:01

Attachment 57309
Dear Niels,
i have different gauges along a wave flume (x=-10, -5, -2, 1, 5 m) i run my case with coarser mesh (dx=wavelength/50 , dz=waveHeight/3.33) until refined mesh (dx=waveLength/100, dz=H/28), 5 mesh in totals, and i observe a loss of wave energy making a loss in waveHeight along x, the graphic represent the last point (x= 5m) of surfaceElevation probing the results of different refined mesh (1:coarser 5:most refined), we can see that the when the last refined mesh lost a lot of energy along the wave propagation direction.

i hope that is more explained then the last post.
think you for your help.
Best regards,
Mehdi

July 17, 2017, 12:25	wave dissipation a long of x wave flume	#1
MehdiCFD New Member Mehdi Join Date: Apr 2016 Posts: 11 Rep Power: 10	hello everybody, i m running a wave flume case with waveFoam solver and i did a mesh refinement study, but the problem that i couldn't inderstand is that when i refine mesh to have dx=L/100 and dz=H/28 the wave height decrease along x direction can someone explain me this phenomena. best regards, Mehdi

July 17, 2017, 14:00		#2
ngj Senior Member Niels Gjoel Jacobsen Join Date: Mar 2009 Location: Copenhagen, Denmark Posts: 1,903 Rep Power: 37	Good afternoon, @Mehdi: You are not providing nearly enough information. Try to read your own message and see, whether you - based on that information alone - can help yourself? This is how people will read your question. Kind regards, Niels __________________ Please note that I do not use the Friend-feature, so do not be offended, if I do not accept a request. Last edited by wyldckat; August 23, 2018 at 15:44. Reason: Copied from post that was answering to two forum members on the main thread, but have now been split into independent threads

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July 18, 2017, 05:01		#3
MehdiCFD New Member Mehdi Join Date: Apr 2016 Posts: 11 Rep Power: 10	Attachment 57309 Dear Niels, i have different gauges along a wave flume (x=-10, -5, -2, 1, 5 m) i run my case with coarser mesh (dx=wavelength/50 , dz=waveHeight/3.33) until refined mesh (dx=waveLength/100, dz=H/28), 5 mesh in totals, and i observe a loss of wave energy making a loss in waveHeight along x, the graphic represent the last point (x= 5m) of surfaceElevation probing the results of different refined mesh (1:coarser 5:most refined), we can see that the when the last refined mesh lost a lot of energy along the wave propagation direction. i hope that is more explained then the last post. think you for your help. Best regards, Mehdi