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-   -   plot water height = f(time) (http://www.cfd-online.com/Forums/cfx/94743-plot-water-height-f-time.html)

 idir November 24, 2011 04:35

plot water height = f(time)

Hello,

I made a simulation of free surface flow of water in a canal (in transient study ) and in post-processing i want to plot the water height according to time on the point defined by the intersection between line 1 and the isosurface in the canal (See Attachment).

- It was easy if we could create a point by intersection between line and isosurface!!

I do not see how I can do that knowing that I have not the height of water but I have the water volume fraction.

Thank you for helping me

 ghorrocks November 24, 2011 07:03

You need to use a bit of lateral thinking.....

Generate a line from the bottom to the top of the domain at the location you wish to measure depth. Then do a line integral of water volume fraction. And there you have the water depth.

 idir November 24, 2011 07:16

Thank you
but how can i do the line integral of water volume fraction ?
There is not the line integral function in CFX POST

 idir November 24, 2011 07:25

Thank you it work
legthint(Water.Volume Fraction )@Line ;

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