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-   -   How to set the reference zone in XY-plot (http://www.cfd-online.com/Forums/star-ccm/94336-how-set-reference-zone-xy-plot.html)

Shelley November 12, 2011 08:11

How to set the reference zone in XY-plot
 
I have a rotating region in my case. and I want to plot the relative velocity. How to choose the reference zone?

abdul099 November 13, 2011 19:49

There is one field function for the relative velocity in each reference frame. You can choose it like any other field function.

Shelley November 13, 2011 21:29

Hi, thank you for your reply. I'm sorry I am not understand clearly...

actually I defined a line in the domain, then choose plot->XY Plot->relative velocity... but I can not find any option to change the reference frame of this curve.
can you show it one step by step? thank you so much.

Quote:

Originally Posted by abdul099 (Post 331918)
There is one field function for the relative velocity in each reference frame. You can choose it like any other field function.


abdul099 November 14, 2011 18:55

1 Attachment(s)
In the dialog where you define the quantity to display, you can just choose the velocity relative to a reference frame, just like any other field function. Don't look for "relative velocity" but for "velocity". The velocities relative to a reference frame could be found when pointing on the little black arrow.

Shelley November 15, 2011 04:14

Thank you so much......:)

Quote:

Originally Posted by abdul099 (Post 332105)
In the dialog where you define the quantity to display, you can just choose the velocity relative to a reference frame, just like any other field function. Don't look for "relative velocity" but for "velocity". The velocities relative to a reference frame could be found when pointing on the little black arrow.



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