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-   -   How to get a data every time step (http://www.cfd-online.com/Forums/openfoam-solving/60488-how-get-data-every-time-step.html)

chnrdu June 18, 2005 03:14

I use sample tool, but It only
 
I use sample tool, but It only get the written time step's date.

how to get a data (e.g. pressure, U,) every time step on a cell or a plane? I want to get it to plot a curve like pressure vs. time.

Thanks.

mattijs June 20, 2005 14:28

When I run it on e.g. the cavi
 
When I run it on e.g. the cavity case I get in the samples/ directory results for every timestep.

You could check whether you have your data file (p, U) in every timestep. And that your sampling point/line is inside a cell.

chnrdu June 21, 2005 08:52

That is to say I must write da
 
That is to say I must write data file every timestep? I don't think that it's a good idea. It take a lot of hard disk resource if I compute a case of many grids and many steps(transient). Is there another way?

Thanks.

mattijs June 21, 2005 15:31

What you want is probably the
 
What you want is probably the 'probe' functionality in e.g. oodles. You'll have to add it to your application but that shouldn't be too hard.

ztdep September 15, 2005 10:53

but what is the oodles? thank
 
but what is the oodles?
thank you for your feedback


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