[lxlylzl.123]

Dear all,


I have calculated the vortex core in swirling pipe flow using Tecplot.


The confusion that I have now is whether the vortex core calculated is based on time-averaged data or from the instantaneous flow filed. I have imported only a single case and data from Fluent into Tecplot.


Any reference to this would also be useful to me.



I look forward to your reply.

[Pravaah]

It depends on the choice of field variables.

If field variables correspond to instantaneous values then vortex cores are also instantaneous.

[AntoineLigier]

Hi,



The vortex core extraction is always calculated from the instantaneous flow field (i.e. the current time step).


Please see Tecplot's knowledge base should you wish to extract a vortex core over time:
https://kb.tecplot.com/2019/02/27/ex...res-over-time/


Hope this helps,

[AamirSultan]

Hi ,
I am performing simulation on a rectangular wing at subsonic speeds . I have extracted the vortex cores in tecplot360 on the completion of my simulation . I was wondering is there any way I could get the space coordinates of the vortex cores in tecplot360?

[ZAB]

Originally Posted by AamirSultan

Hi ,
I am performing simulation on a rectangular wing at subsonic speeds . I have extracted the vortex cores in tecplot360 on the completion of my simulation . I was wondering is there any way I could get the space coordinates of the vortex cores in tecplot360?

The Vortex cores are extracted by tecplot in a separate zone. you can then write the data as tecplot ascii and export the zones with name vortex core.
there you have it, the coordinates of the vortex cores