How to plot streamlines on a slice?

ziggo · February 2, 2014, 17:33

How can I plot streamlines on a slice? I only found ways to enable contour or vector plots on a slice.
I've managed to do this in CFD post (see attachment), but because my dataset is too big now CFD post is unable to handle this. Hence I switched to Tecplot 360.

How can I achieve a similar looking visualisation in Tecplot 360? The attachment shows what my goal is. The image shows the streamlines colored by velocity on three different bounded planes.

DLuo · February 6, 2014, 16:52

Streamlines are integrated on U V W vectors so naturally they won't constrain themselves to a slice.
One way to work around this is by forcing one of your Vectors (for example W) to zero. This really only works if you're looking at slices in the principle axis.

If you want streamlines on a Z slice, you can go to calculate variables and create a new variable = 0. Then under Vectors, set X to U, Y to V, and Z to your newly created variable which should be zero.
Now show your slice and seed streamlines on that slice. Because Tecplot now thinks that your Z component of your vector is 0, the streamlines shouldn't deviate out of the plane.
Take caution however, because your Z component is not the true component value, the streamline integration might not be entirely accurate.

scott_rumage · November 17, 2014, 11:45

Tecplot has posted a nice tutorial on plotting streamlines, streaklines & particle paths located here: http://www.tecplot.com/blog/2014/10/31/streaklines-streamlines-particle-paths/ .This video should be helpful in answering your question.
Regards,
Scott

Durrell4 · November 17, 2014, 11:56

Hi Ziggo,

We have had several requests for streamtraces on a slice in the past few years. Generally the approach Andy outlined is a reasonable approach. There is an alternative method where you extract the slices from the volume domain and use "surface" streamtraces to create the plot of interest. I will post a tutorial on the process using Tecplot 360 EX later today. My tutorial on streaklines etc. is not related to this particular solution, but it gives a simple overview.

Link to tutorial: http://youtu.be/r4wItXyDQb8

Best

Durrell
Tecplot 360 Product Manager

omgcfd · October 23, 2016, 02:37

sir i am not able to make streamtraces on selected zone..how to creat sir. in figure see i did slice in x axis then i made extract and select my x axis extract and make slice but it not made slice..pls reply
http://file:///I:/untitled.png

November 17, 2014, 11:56	Streamlines on a slice	#4
Durrell4 Member Durrell Rittenberg Join Date: May 2011 Location: Bellevue WA Posts: 38 Rep Power: 14	Hi Ziggo, We have had several requests for streamtraces on a slice in the past few years. Generally the approach Andy outlined is a reasonable approach. There is an alternative method where you extract the slices from the volume domain and use "surface" streamtraces to create the plot of interest. I will post a tutorial on the process using Tecplot 360 EX later today. My tutorial on streaklines etc. is not related to this particular solution, but it gives a simple overview. Link to tutorial: http://youtu.be/r4wItXyDQb8 Best Durrell Tecplot 360 Product Manager fruitkiwi likes this. Last edited by Durrell4; November 17, 2014 at 14:54. Reason: added link to tutorial

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February 6, 2014, 16:52		#2
DLuo Member D L Join Date: Jun 2012 Posts: 49 Rep Power: 13	Streamlines are integrated on U V W vectors so naturally they won't constrain themselves to a slice. One way to work around this is by forcing one of your Vectors (for example W) to zero. This really only works if you're looking at slices in the principle axis. If you want streamlines on a Z slice, you can go to calculate variables and create a new variable = 0. Then under Vectors, set X to U, Y to V, and Z to your newly created variable which should be zero. Now show your slice and seed streamlines on that slice. Because Tecplot now thinks that your Z component of your vector is 0, the streamlines shouldn't deviate out of the plane. Take caution however, because your Z component is not the true component value, the streamline integration might not be entirely accurate.

November 17, 2014, 11:45		#3
scott_rumage Senior Member Scott Rumage Join Date: May 2009 Location: Seattle, WA Posts: 152 Rep Power: 16	Tecplot has posted a nice tutorial on plotting streamlines, streaklines & particle paths located here: http://www.tecplot.com/blog/2014/10/31/streaklines-streamlines-particle-paths/ .This video should be helpful in answering your question. Regards, Scott

October 23, 2016, 02:37		#5
omgcfd New Member amit agrawal Join Date: Jun 2016 Posts: 5 Rep Power: 9	sir i am not able to make streamtraces on selected zone..how to creat sir. in figure see i did slice in x axis then i made extract and select my x axis extract and make slice but it not made slice..pls reply http://file:///I:/untitled.png