ploting a line or point data along with time

smhk · April 18, 2025, 18:12

Hello everyone.After running the simulation in CFX . I have a line which I want to plot the velocity over it in every time step together. Is there any way to plot them or export the data over line as well as time steps?
A simpler case: plotting the velocity for a point over time.
Thank you.

ghorrocks · April 19, 2025, 05:53

Do you want to show an animation of velocity vectors? Just draw the line, put a vectors object in using the line and use the animation tool to animate it over time.

smhk · April 19, 2025, 15:56

No, I want to have the data over the line (velocity) at each time step together so I can take the time average of them (as an example). Not to export velocities for each time step to a spreadsheet software then take the time average of them

ghorrocks · April 19, 2025, 22:05

Have you looked at the transient statistics in CFX? You might be able the calculate what you want with that so you do not need to do it.

I do not understand your question, you seem to say you want to export the data so you can calculate stuff but then you say that is not what you want to do.

So I am going to guess that you want to export data - that is easy with file/export in CFD-Post. You can select your line as the object to export, and you can do it for each time step you have a results file for.

smhk · April 21, 2025, 16:26

I thank you for the time you spend to answer my question ghorrocks.
I want to plot data (Velocity or Pressure) of a point over time.

ghorrocks · April 21, 2025, 18:02

In that case you can define a monitor point in the output tab of CFX-Pre, and then as the simulation progresses the value of that monitor point can be shown in Solver Manager. The monitor point will be output every time step regardless of what transient results files you save.

Opaque · April 21, 2025, 18:39

Quote:

Originally Posted by ghorrocks

In that case you can define a monitor point in the output tab of CFX-Pre, and then as the simulation progresses the value of that monitor point can be shown in Solver Manager. The monitor point will be output every time step regardless of what transient results files you save.

and you can compute a few transient statistics on those values as well.

smhk · April 27, 2025, 08:55

Thank you.

April 18, 2025, 18:12	ploting a line or point data along with time	#1
smhk Member Join Date: Dec 2023 Posts: 34 Rep Power: 3	Hello everyone.After running the simulation in CFX . I have a line which I want to plot the velocity over it in every time step together. Is there any way to plot them or export the data over line as well as time steps? A simpler case: plotting the velocity for a point over time. Thank you.

April 19, 2025, 05:53		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,944 Rep Power: 145	Do you want to show an animation of velocity vectors? Just draw the line, put a vectors object in using the line and use the animation tool to animate it over time. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

April 19, 2025, 22:05		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,944 Rep Power: 145	Have you looked at the transient statistics in CFX? You might be able the calculate what you want with that so you do not need to do it. I do not understand your question, you seem to say you want to export the data so you can calculate stuff but then you say that is not what you want to do. So I am going to guess that you want to export data - that is easy with file/export in CFD-Post. You can select your line as the object to export, and you can do it for each time step you have a results file for. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

April 21, 2025, 18:02		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,944 Rep Power: 145	In that case you can define a monitor point in the output tab of CFX-Pre, and then as the simulation progresses the value of that monitor point can be shown in Solver Manager. The monitor point will be output every time step regardless of what transient results files you save. Opaque and smhk like this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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April 19, 2025, 15:56		#3
smhk Member Join Date: Dec 2023 Posts: 34 Rep Power: 3	No, I want to have the data over the line (velocity) at each time step together so I can take the time average of them (as an example). Not to export velocities for each time step to a spreadsheet software then take the time average of them

April 21, 2025, 16:26		#5
smhk Member Join Date: Dec 2023 Posts: 34 Rep Power: 3	I thank you for the time you spend to answer my question ghorrocks. I want to plot data (Velocity or Pressure) of a point over time.

April 27, 2025, 08:55		#8
smhk Member Join Date: Dec 2023 Posts: 34 Rep Power: 3	Thank you.

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