How to compute contours in oepnFOAM using VTK

luckyluke · April 19, 2005, 00:35

In the code of my solver(not for postprocessing), I want to compute the contours of the flow field(e.g. pressure or velocity). I knew that VTK has vtkContourFilter and vtkMarchingCube for contour computing. How can I do it with these two classes?

Thank all.

luckyluke · April 19, 2005, 08:50

Hi,everybody.

How can I achieve the special mesh and field values needed by VTK? I want to use them for further contour computing using VTK.

Thanks.

mattijs · April 19, 2005, 09:00

foamToVTK?

If you want to interface directly to VTK have a look at the Paraview reader module $FOAM_UTILITIES/postProcessing/graphics/PVFoamReader/vtkFoam/
(not trivial though!)

luckyluke · April 19, 2005, 09:56

Btw, the utility 'paraFoam' is only a simple script which can be found in 'OpenFOAM-1.1\bin'.
Then in which way are the mesh and flow field convered to the datatype needed by paraView?

eugene · April 19, 2005, 10:24

I think you will find it much easier to add whatever functionality you need to foam instead of trying to use non-native vtk libraries. There is allready some isoSurface stuff hidden in the OpenFOAM source, you just need to dig it up.

luckyluke · April 19, 2005, 10:43

Hi,Eugene de Villiers and everyone. What is the easy way to meet my demand?

eugene · April 19, 2005, 12:12

I didnt say easy, I said easier.

What exactly do you want to accomplish by calculating the contours of the flow field anyway?

April 19, 2005, 00:35	In the code of my solver(not f	#1
luckyluke Member Luckyluke Join Date: Mar 2009 Posts: 51 Rep Power: 17	In the code of my solver(not for postprocessing), I want to compute the contours of the flow field(e.g. pressure or velocity). I knew that VTK has vtkContourFilter and vtkMarchingCube for contour computing. How can I do it with these two classes? Thank all.

April 19, 2005, 08:50	Hi,everybody. How can I ac	#2
luckyluke Member Luckyluke Join Date: Mar 2009 Posts: 51 Rep Power: 17	Hi,everybody. How can I achieve the special mesh and field values needed by VTK? I want to use them for further contour computing using VTK. Thanks.

April 19, 2005, 09:00	foamToVTK? If you want to i	#3
mattijs Senior Member Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26	foamToVTK? If you want to interface directly to VTK have a look at the Paraview reader module $FOAM_UTILITIES/postProcessing/graphics/PVFoamReader/vtkFoam/ (not trivial though!)

April 19, 2005, 09:56	Btw, the utility 'paraFoam' is	#4
luckyluke Member Luckyluke Join Date: Mar 2009 Posts: 51 Rep Power: 17	Btw, the utility 'paraFoam' is only a simple script which can be found in 'OpenFOAM-1.1\bin'. Then in which way are the mesh and flow field convered to the datatype needed by paraView?

April 19, 2005, 10:24	I think you will find it much	#5
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	I think you will find it much easier to add whatever functionality you need to foam instead of trying to use non-native vtk libraries. There is allready some isoSurface stuff hidden in the OpenFOAM source, you just need to dig it up.

April 19, 2005, 10:43	Hi,Eugene de Villiers and ever	#6
luckyluke Member Luckyluke Join Date: Mar 2009 Posts: 51 Rep Power: 17	Hi,Eugene de Villiers and everyone. What is the easy way to meet my demand?

April 19, 2005, 12:12	I didnt say easy, I said easie	#7
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	I didnt say easy, I said easier. What exactly do you want to accomplish by calculating the contours of the flow field anyway?

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