Plotting streamlines on a sliding mesh

Siba11 · July 18, 2021, 02:17

How to import 'x-velocity' and 'y-velocity' data into Tecplot-360, and draw streamlines?

I am using a sliding mesh to simulate flow past a rotating elliptic cylinder in ANSYS. When I import the case & data file into Tecplot and try to draw the streamlines, they break at the interface of the stationary and rotating domain. I have attached an image of the problem I am facing.
I am given to understand that importing just the 'x-velocity' and 'y-velocity' data will resolve this problem, but I don't know how to go about it. I'd be grateful if anyone could elucidate how to import the files, and what to do once they are imported in Tecplot.
I viewed this video on youtube- "Tecplot 360 Interpolation". But when I tried it, my cylinder disappeared, so it wasn't much help.
PS: I have Tecplot 360 EX 2014.

aerosayan · July 18, 2021, 06:12

-deleted-
didn't read the question correctly before answering...
apologies...

aero_head · July 18, 2021, 22:48

What post processing software are you using (Fluent, CFX, etc...)?

Siba11 · July 19, 2021, 00:51

Hi, I'm using Fluent.

aero_head · July 20, 2021, 02:43

Okay, what format are you outputting the data as to Tecplot?

JBeilke · July 20, 2021, 05:53

You can not do it with "Streamlines", because they have no meaning in a transient calculation. When you use the "absolute velocity" at a fixed time, the lines will usually hit the rotating wall, since in reality it has already moved.

Just do a transient particle tracking instead. Here is an example, that I did some time ago in EnSight (and also in StarCCM+) . But it should be also possible in Fluent.

https://www.beilke-cfd.de/files/vide...umeco_1280.mp4

Siba11 · July 21, 2021, 08:20

I am loading the case and data file of Ansys Fluent 2019R3 into TecPlot 2014.

July 20, 2021, 05:53		#6
JBeilke Senior Member Joern Beilke Join Date: Mar 2009 Location: Dresden Posts: 498 Rep Power: 20	You can not do it with "Streamlines", because they have no meaning in a transient calculation. When you use the "absolute velocity" at a fixed time, the lines will usually hit the rotating wall, since in reality it has already moved. Just do a transient particle tracking instead. Here is an example, that I did some time ago in EnSight (and also in StarCCM+) . But it should be also possible in Fluent. https://www.beilke-cfd.de/files/vide...umeco_1280.mp4 aerosayan likes this.

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July 18, 2021, 06:12		#2
aerosayan Senior Member Sayan Bhattacharjee Join Date: Mar 2020 Posts: 495 Rep Power: 8	-deleted- didn't read the question correctly before answering... apologies...

July 18, 2021, 22:48		#3
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 8	What post processing software are you using (Fluent, CFX, etc...)?

July 19, 2021, 00:51		#4
Siba11 Member Odisha Join Date: Jan 2020 Posts: 59 Rep Power: 6	Hi, I'm using Fluent.

July 20, 2021, 02:43		#5
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 8	Okay, what format are you outputting the data as to Tecplot?

July 21, 2021, 08:20		#7
Siba11 Member Odisha Join Date: Jan 2020 Posts: 59 Rep Power: 6	I am loading the case and data file of Ansys Fluent 2019R3 into TecPlot 2014.