[OpenFOAM] Stream tracers problem

soup · August 10, 2006, 08:26

If someone is using the 32 bit binaries for openFoam 1.3 could you please say whether the stream tracers function works for you?

hwe001 · August 30, 2006, 13:23

I used the paraFoam to load a paraView tutorial and get stream line things working... but still the cavity case fail to run in streamline.... strange.

mbeaudoin · September 14, 2006, 11:13

We have the same problem too with the Stream Tracer Filter and paraFoam from OpenFOAM 1.3.

On my side, I have found out that the ExtractParts trick is working, but only if I extract the Internal Mesh alone, without any boundary patches.

This way, the Stream Tracer Filter applied to the extracted Internal Mesh will only have one dataset to work with (check the Information Tab for the Number of datasets), and it will do its job without complaining.

My little 2 cents... until a better fix can be found...

Martin

November 2, 2006, 08:03

Hej,

I have a same problem as you :

There was a VTK Error in file: ../../../../../paraview-2.4.2/VTK/Filtering/vtkDemandDrivenPipeline.cxx (661)
vtkCompositeDataPipeline (0x18a3540): Input port 0 of algorithm vtkDistributedStreamTracer(0x29177d0) has 4 connections but is not repeatable.

I am tring following tutorials, but now I stock at this place.

Could you help me?

Best regards,
Rita

gschaider · November 2, 2006, 08:40

Hi Rita

Look at the second post in this thread (Thomas') and the previous (Matin's). It's all there:

Go to the Filter-Menu, Choose "Extract Parts" in the dialog box Choose only "Internal Mesh". From this filter-node (and only from this) you can generate Streamlines.

November 2, 2006, 08:57

Hej Bernhard,
I have tryed, but nothing.

I went to the "Extract Parts"-> choose mesh...but still the same thing.

Maybe I am doing something wrong?

Best regards,
/Rita

mbeaudoin · November 2, 2006, 09:28

Hello Rita,

First, apply the Extract Parts filter.

Then, make sure you have selected the "extracted" part representing your internal mesh before applying the Stream Tracer filter.

In paraView/paraFoam, filters are always applied to the entity that is currently selected.

Martin

November 2, 2006, 10:02

Hej,

Thank you for help.

I did that you sad, but nothing happend. How I can check that I have selected the "extracted" part?

Rita

mbeaudoin · November 2, 2006, 12:20

Ok, when you apply the ExtractParts filter, paraFoam will automatically present you a menu where all the "subparts" are already pre-selected. You don't want that.

You need to select with your mouse only the subpart called "Internal Mesh" in order to extract only the internal mesh.

By default, that new extracted part will be called "ExtractParts1".

Then, you need to apply the StreamTracer filter to that part by first selecting "ExtractParts1" and then selecting the Stream Tracer option in the Filter menu.

Martin

November 3, 2006, 04:07

Hej Martin,

Thanks again for your kind help!

Can I ask you more q's;) I did what you said, but why with my streamlines I have got a error message:
--------------------------------------------------
here was a VTK Error in file: ../../../../../paraview-2.4.2/VTK/Filtering/vtkPolyLine.cxx (195)
vtkPolyLine (0x3506b20): Coincident points in polyline...can't compute normals
---------------------------------------------------
What is it means?

Best regards,
Rita

mbeaudoin · November 3, 2006, 07:36

Hi Rita,

That error message does ring a bell, but I can't remember what I did at the time to get rid of it. Maybe other Foam users could help you better than me here.

Could be something with mesh or vector field.

Try playing with the Streamlines filter parameters, changing starting position, number of points, radius, etc.

Good luck.

Martin

gschaider · November 3, 2006, 07:59

Hi Rita!

But your stream-lines get displayed (at least some of them)? I think this is a warning he displays when some "seed points" of the streamlines are outside of the mesh (speak: where no data is). But I could be wrong.

Have a look at the VTK-mailinglist-archives. Looks like the kind of stuff you find there.

Bernhard

November 3, 2006, 08:19

Hej,

I have solved the problem. I changed resolution from
20 to 21 in the "Stream". Now no error message.

Thank you,
Rita

in_flu_ence · February 21, 2007, 15:02

I tried using Martin's Extract Part Filter. It works
Make sure that only Internal Mesh is chosen.

Can't figure the reason why. I bet I shall explore further.

jitendraseregar@gmail.com · June 8, 2015, 09:37

Hi everyone,
I have problem in plotting stream tracer for staggered cavity. I mean stream contour is partially visible. can anybody suggest what`s wrong ?

August 10, 2006, 08:26	If someone is using the 32 bit	#21
soup New Member Bryan Godbolt Join Date: Mar 2009 Location: London, Ontario, Canada Posts: 14 Rep Power: 17	If someone is using the 32 bit binaries for openFoam 1.3 could you please say whether the stream tracers function works for you?

August 30, 2006, 13:23	I used the paraFoam to load a	#22
hwe001 New Member hemoGuy Join Date: Mar 2009 Posts: 3 Rep Power: 17	I used the paraFoam to load a paraView tutorial and get stream line things working... but still the cavity case fail to run in streamline.... strange.

September 14, 2006, 11:13	We have the same problem too w	#23
mbeaudoin Senior Member Martin Beaudoin Join Date: Mar 2009 Posts: 332 Rep Power: 22	We have the same problem too with the Stream Tracer Filter and paraFoam from OpenFOAM 1.3. On my side, I have found out that the ExtractParts trick is working, but only if I extract the Internal Mesh alone, without any boundary patches. This way, the Stream Tracer Filter applied to the extracted Internal Mesh will only have one dataset to work with (check the Information Tab for the Number of datasets), and it will do its job without complaining. My little 2 cents... until a better fix can be found... Martin

November 2, 2006, 08:03	Hej, I have a same problem	#24
mss Guest Posts: n/a	Hej, I have a same problem as you : There was a VTK Error in file: ../../../../../paraview-2.4.2/VTK/Filtering/vtkDemandDrivenPipeline.cxx (661) vtkCompositeDataPipeline (0x18a3540): Input port 0 of algorithm vtkDistributedStreamTracer(0x29177d0) has 4 connections but is not repeatable. I am tring following tutorials, but now I stock at this place. Could you help me? Best regards, Rita

November 2, 2006, 08:40	Hi Rita Look at the second	#25
gschaider Assistant Moderator Bernhard Gschaider Join Date: Mar 2009 Posts: 4,225 Rep Power: 51	Hi Rita Look at the second post in this thread (Thomas') and the previous (Matin's). It's all there: Go to the Filter-Menu, Choose "Extract Parts" in the dialog box Choose only "Internal Mesh". From this filter-node (and only from this) you can generate Streamlines. __________________ Note: I don't use "Friend"-feature on this forum out of principle. Ah. And by the way: I'm not on Facebook either. So don't be offended if I don't accept your invitation/friend request

November 2, 2006, 08:57	Hej Bernhard, I have tryed,	#26
mss Guest Posts: n/a	Hej Bernhard, I have tryed, but nothing. I went to the "Extract Parts"-> choose mesh...but still the same thing. Maybe I am doing something wrong? Best regards, /Rita

November 2, 2006, 09:28	Hello Rita, First, apply th	#27
mbeaudoin Senior Member Martin Beaudoin Join Date: Mar 2009 Posts: 332 Rep Power: 22	Hello Rita, First, apply the Extract Parts filter. Then, make sure you have selected the "extracted" part representing your internal mesh before applying the Stream Tracer filter. In paraView/paraFoam, filters are always applied to the entity that is currently selected. Martin

November 2, 2006, 10:02	Hej, Thank you for help.	#28
mss Guest Posts: n/a	Hej, Thank you for help. I did that you sad, but nothing happend. How I can check that I have selected the "extracted" part? Rita

November 2, 2006, 12:20	Ok, when you apply the Extract	#29
mbeaudoin Senior Member Martin Beaudoin Join Date: Mar 2009 Posts: 332 Rep Power: 22	Ok, when you apply the ExtractParts filter, paraFoam will automatically present you a menu where all the "subparts" are already pre-selected. You don't want that. You need to select with your mouse only the subpart called "Internal Mesh" in order to extract only the internal mesh. By default, that new extracted part will be called "ExtractParts1". Then, you need to apply the StreamTracer filter to that part by first selecting "ExtractParts1" and then selecting the Stream Tracer option in the Filter menu. Martin

November 3, 2006, 04:07	Hej Martin, Thanks again fo	#30
mss Guest Posts: n/a	Hej Martin, Thanks again for your kind help! Can I ask you more q's;) I did what you said, but why with my streamlines I have got a error message: -------------------------------------------------- here was a VTK Error in file: ../../../../../paraview-2.4.2/VTK/Filtering/vtkPolyLine.cxx (195) vtkPolyLine (0x3506b20): Coincident points in polyline...can't compute normals --------------------------------------------------- What is it means? Best regards, Rita

November 3, 2006, 07:36	Hi Rita, That error message	#31
mbeaudoin Senior Member Martin Beaudoin Join Date: Mar 2009 Posts: 332 Rep Power: 22	Hi Rita, That error message does ring a bell, but I can't remember what I did at the time to get rid of it. Maybe other Foam users could help you better than me here. Could be something with mesh or vector field. Try playing with the Streamlines filter parameters, changing starting position, number of points, radius, etc. Good luck. Martin

November 3, 2006, 07:59	Hi Rita! But your stream-li	#32
gschaider Assistant Moderator Bernhard Gschaider Join Date: Mar 2009 Posts: 4,225 Rep Power: 51	Hi Rita! But your stream-lines get displayed (at least some of them)? I think this is a warning he displays when some "seed points" of the streamlines are outside of the mesh (speak: where no data is). But I could be wrong. Have a look at the VTK-mailinglist-archives. Looks like the kind of stuff you find there. Bernhard __________________ Note: I don't use "Friend"-feature on this forum out of principle. Ah. And by the way: I'm not on Facebook either. So don't be offended if I don't accept your invitation/friend request

November 3, 2006, 08:19	Hej, I have solved the prob	#33
mss Guest Posts: n/a	Hej, I have solved the problem. I changed resolution from 20 to 21 in the "Stream". Now no error message. Thank you, Rita

February 21, 2007, 15:02	I tried using Martin's Extract	#34
in_flu_ence New Member Harris Join Date: Mar 2009 Posts: 16 Rep Power: 17	I tried using Martin's Extract Part Filter. It works Make sure that only Internal Mesh is chosen. Can't figure the reason why. I bet I shall explore further.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
area does not match neighbour by ... % -- possible face ordering problem	St.Pacholak	OpenFOAM	10	February 7, 2024 21:50
Fluent Parallelization Problem After AC Power Dropped	pawl	Hardware	5	November 13, 2016 06:08
Free Stream Temperature in natural convection problem	tomcatbobby	FLUENT	2	January 27, 2011 05:41
Stream Functions in a 3D problem	Shamoon	FLUENT	5	August 16, 2009 12:49
Adiabatic and Rotating wall (Convection problem)	ParodDav	CFX	5	April 29, 2007 19:13