[chnrdu]

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]

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]

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]

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]

but what is the oodles?
thank you for your feedback