# How can I draw the velocity vector graph on tecplot or origin pro?

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 April 13, 2022, 09:11 How can I draw the velocity vector graph on tecplot or origin pro? #1 New Member   Janet J Join Date: Aug 2019 Location: UK Posts: 15 Rep Power: 6 Hello guys, I want to draw graph based on velocity vector, such as the one as follows, for an airfoil simulation I have done. I have no idea how to draw similar graph on either tecplot or origin. I know how to work on both platforms, but all I need is to extract the data, which I do not know how to do on Ansys FLUENT. Can anyone help me with the steps? Will appreciate the help. ~JJ

 April 19, 2022, 21:51 #2 Senior Member   Scott Fowler Join Date: May 2009 Posts: 112 Rep Power: 16 There are a couple methods I can think of in Tecplot 360. The easiest is probably to use the Data>Extract>Precise Line... feature. With this dialog you can enter XYZ start and end points and it will extract a line between those points. This method is easy, but the points are evenly distributed, which means that you may not have enough samples near the surface and too many as you get farther away from the surface. In that case you may prefer using the "slice of a slice" method. First perform a slice through the volume data and extract it to a new zone. Then slice the extracted slice and extract that to a new zone. Now you have a linear zone that represents the exact cell-faces in your dataset. This is more cumbersome, but likely more accurate. Once you have the line extracted you create an XY plot with (for example) U-Velocity on the X-axis and Z on the Y-Axis. If you have current software maintenance you can always contact support@tecplot.com for help too! Janet likes this.

April 27, 2022, 18:43
#3
New Member

Janet J
Join Date: Aug 2019
Location: UK
Posts: 15
Rep Power: 6
Quote:
 Originally Posted by wsfowler There are a couple methods I can think of in Tecplot 360. The easiest is probably to use the Data>Extract>Precise Line... feature. With this dialog you can enter XYZ start and end points and it will extract a line between those points. This method is easy, but the points are evenly distributed, which means that you may not have enough samples near the surface and too many as you get farther away from the surface. In that case you may prefer using the "slice of a slice" method. First perform a slice through the volume data and extract it to a new zone. Then slice the extracted slice and extract that to a new zone. Now you have a linear zone that represents the exact cell-faces in your dataset. This is more cumbersome, but likely more accurate. Once you have the line extracted you create an XY plot with (for example) U-Velocity on the X-axis and Z on the Y-Axis. If you have current software maintenance you can always contact support@tecplot.com for help too!
Thank you for your response. I am trying to do that, but unable to do so. I would have appreciated a video tutorial. Or another platform than Tecplot where it would have been much easier. I will keep trying though - but time is of essence. Thank you, once again

 Tags origin, tecplot, velocity vector graph