[OpenFOAM] How to smooth the visualization in a ParaFoamParaview

sampaio · July 18, 2005, 16:21

Dear All,
I would like to smooth the graphics, like if I did not have discrete data, but splines. Mostly when I am ploting iso contourns...

Question: is that possible in paraview/paraFoam?

Thanks a lot

mattijs · July 18, 2005, 18:48

Does adding normals help (Filter->Normals)?

sampaio · July 18, 2005, 19:44

Thanks, It helped, but did not solved...
What I really would like to accomplish is producing good graphics (beautiful shadings etc...) even in a very coarse mesh...

I am still seeing piecewise linear objects, instead of a nice smoothly-shaded 3D contour... I would love to see something really like a spline interpolation, so that even in coarse meshes the graphics would be fine...

Thanks again,
luiz

lgriffiths · March 1, 2008, 08:22

hi luiz,

did you manage to accomplish the smoothing?

i'm now finding myself in the same situation.

cheers,
Laurence

idrama · August 2, 2010, 04:39

I have just been in the same situation and I found a solution. During the starting of paraFoam such a case.OpenFOAM file is created and loaded. Now, in paraFoam open the file again, so that you have two sessions of it. One session should be the normal one and in the second session should only be used the patches which are intetended to be smooth by Filter->Alphabetical->Smooth.

Hopfully it will help; I wrote that fast here; ain't got no time.

DITO · August 3, 2011, 06:52

I´m interested in smoothing my geometry, as well.
Unfortunately in my case, the smooth filter is set in grey.
Any Idea?
Cheers,
DITO

idrama · August 3, 2011, 06:57

Choose another color! ;-)

DITO · August 3, 2011, 07:37

the Filter is greyed out!
nice joke!

cboss · November 23, 2012, 10:03

This is what worked in my case:
Filters:
1. Extract Surface
2. Generate Surface Normals (-> delivers smooth output)

Regards,
Christoph

colemuel · July 5, 2018, 17:08

Use Point Data. If all you have is cell data you can convert to point data through the "cell data to point data" filter. Paraview automatically interpolates point data to complete the rendering. To complete the rendering for cell data paraview simply fills the cell volumes with it's associated data value.

July 18, 2005, 16:21	How to smooth the visualization in a ParaFoamParaview	#1
sampaio Member diablo80@web.de Join Date: Mar 2009 Posts: 93 Rep Power: 17	Dear All, I would like to smooth the graphics, like if I did not have discrete data, but splines. Mostly when I am ploting iso contourns... Question: is that possible in paraview/paraFoam? Thanks a lot

July 18, 2005, 18:48	Does adding normals help (Filt	#2
mattijs Senior Member Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26	Does adding normals help (Filter->Normals)?

July 18, 2005, 19:44	Thanks, It helped, but did not	#3
sampaio Member diablo80@web.de Join Date: Mar 2009 Posts: 93 Rep Power: 17	Thanks, It helped, but did not solved... What I really would like to accomplish is producing good graphics (beautiful shadings etc...) even in a very coarse mesh... I am still seeing piecewise linear objects, instead of a nice smoothly-shaded 3D contour... I would love to see something really like a spline interpolation, so that even in coarse meshes the graphics would be fine... Thanks again, luiz

March 1, 2008, 08:22	hi luiz, did you manage to	#4
lgriffiths New Member Laurence Griffiths Join Date: Mar 2009 Location: Bristol, UK Posts: 18 Rep Power: 17	hi luiz, did you manage to accomplish the smoothing? i'm now finding myself in the same situation. cheers, Laurence sourav90 likes this.

August 2, 2010, 04:39		#5
idrama Senior Member Claus Meister Join Date: Aug 2009 Location: Wiesbaden, Germany Posts: 241 Rep Power: 18	I have just been in the same situation and I found a solution. During the starting of paraFoam such a case.OpenFOAM file is created and loaded. Now, in paraFoam open the file again, so that you have two sessions of it. One session should be the normal one and in the second session should only be used the patches which are intetended to be smooth by Filter->Alphabetical->Smooth. Hopfully it will help; I wrote that fast here; ain't got no time. Luttappy likes this.

August 3, 2011, 06:52		#6
DITO New Member Join Date: Jun 2011 Posts: 14 Rep Power: 15	I´m interested in smoothing my geometry, as well. Unfortunately in my case, the smooth filter is set in grey. Any Idea? Cheers, DITO

August 3, 2011, 06:57		#7
idrama Senior Member Claus Meister Join Date: Aug 2009 Location: Wiesbaden, Germany Posts: 241 Rep Power: 18	Choose another color! ;-)

August 3, 2011, 07:37		#8
DITO New Member Join Date: Jun 2011 Posts: 14 Rep Power: 15	the Filter is greyed out! nice joke!

November 23, 2012, 10:03		#9
cboss New Member Join Date: Feb 2010 Posts: 24 Rep Power: 16	This is what worked in my case: Filters: 1. Extract Surface 2. Generate Surface Normals (-> delivers smooth output) Regards, Christoph salehi144, Pagoda, callmetao and 2 others like this.

July 5, 2018, 17:08	Point Data	#10
colemuel New Member Cole Join Date: Jul 2018 Posts: 3 Rep Power: 8	Use Point Data. If all you have is cell data you can convert to point data through the "cell data to point data" filter. Paraview automatically interpolates point data to complete the rendering. To complete the rendering for cell data paraview simply fills the cell volumes with it's associated data value. aerosayan likes this.

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