[OpenFOAM] Problem with xy plot

sunnysun · April 8, 2008, 05:55

Hi, everyone

I have a problem with x-y plot in paraview. I tired with several tutorials but seems i could not get the velocity profile accross a single line.

For example after i run with icofoam and start the paraview,the steps are:

1)select a time instance
2)filter-> append dataset
3)filter->probe

Then I select 'line' as a probe object and specify two points.
However, only pressure(or maybe only scalar) can be plotted, Ux, Uy, Uz are not appeared in the'point scalars'.

Any one has some idears? Thanks in advance!

cedric_duprat · April 8, 2008, 07:48

Hi Qii,

Maybe, you can have a look in the user guide chapter 7.5: Sampling data for plotting graphs. It is about the sample utility.
I think It will be usefull :o)

regards,

Cedric

sunnysun · April 9, 2008, 03:14

Hi, Cedric,

Thanks for your idea. But does it mean that I did not follow the right steps?

Qi

alimansouri · January 13, 2009, 09:51

Hi, I have the same problem, can anybody help ?

only pressure can be plotted in Paraview 2.4, Ux, Uy, Uz are not appeared.

bigphil · April 23, 2009, 06:42

Hi,

Did you first use 'Ucomponents' to break the velocity into its repective components or use 'magU' to get the magnitude of the velocity? Then Ux, Uy and Uz or magU should appear as they are scalars.

Hopefully this helps,
Philip C

bigphil · April 23, 2009, 06:52

I am using OpenFOAM v1.4.1

Possibly the commands in OpenFOAM v1.5 are:

"foamCalc components U"

or

"foamCalc mag U"

April 8, 2008, 05:55	Problem with xy plot	#1
sunnysun Member Vivien Join Date: Mar 2009 Posts: 52 Rep Power: 17	Hi, everyone I have a problem with x-y plot in paraview. I tired with several tutorials but seems i could not get the velocity profile accross a single line. For example after i run with icofoam and start the paraview,the steps are: 1)select a time instance 2)filter-> append dataset 3)filter->probe Then I select 'line' as a probe object and specify two points. However, only pressure(or maybe only scalar) can be plotted, Ux, Uy, Uz are not appeared in the'point scalars'. Any one has some idears? Thanks in advance!

April 8, 2008, 07:48	Hi Qii, Maybe, you can have	#2
cedric_duprat Senior Member Cedric DUPRAT Join Date: Mar 2009 Location: Nantes, France Posts: 195 Rep Power: 17	Hi Qii, Maybe, you can have a look in the user guide chapter 7.5: Sampling data for plotting graphs. It is about the sample utility. I think It will be usefull :o) regards, Cedric

April 9, 2008, 03:14	Hi, Cedric, Thanks for your	#3
sunnysun Member Vivien Join Date: Mar 2009 Posts: 52 Rep Power: 17	Hi, Cedric, Thanks for your idea. But does it mean that I did not follow the right steps? Qi

January 13, 2009, 09:51	Hi, I have the same problem, c	#4
alimansouri New Member Ali Mansouri Join Date: Mar 2009 Posts: 15 Rep Power: 17	Hi, I have the same problem, can anybody help ? only pressure can be plotted in Paraview 2.4, Ux, Uy, Uz are not appeared.

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April 23, 2009, 06:42		#5
bigphil Super Moderator Philip Cardiff Join Date: Mar 2009 Location: Dublin, Ireland Posts: 1,089 Rep Power: 34	Hi, Did you first use 'Ucomponents' to break the velocity into its repective components or use 'magU' to get the magnitude of the velocity? Then Ux, Uy and Uz or magU should appear as they are scalars. Hopefully this helps, Philip C

April 23, 2009, 06:52		#6
bigphil Super Moderator Philip Cardiff Join Date: Mar 2009 Location: Dublin, Ireland Posts: 1,089 Rep Power: 34	I am using OpenFOAM v1.4.1 Possibly the commands in OpenFOAM v1.5 are: "foamCalc components U" or "foamCalc mag U"

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