[cjc96]

Hey CFD-Online,
I've been using the forum here as a source of info for a long time now but have only just had the need to post, so please be gentle!

I've searched around a bit for an answer, but had no luck, possibly because I'm not entirely sure how to word my question at a length Google would fine usable.


Basically, I am writing some ./Allrun scripts to help automate some snappyHexMesh iterations, and have run into an issue.


I understand that snappy builds its mesh over three time-steps, based on controlDict, and that you can overwrite your existing polyMesh (as opposed to having three new time directories) by using the -overwrite argument, however, I haven't been able to get -overwrite to function as expected when parallelising snappy using mpirun and reconstructing.


So my question is twofold, am I doing something wrong when it comes to parallel -overwrite, and if not, is there a way I can call the latestTime directory in a shell script in order to overwrite polyMesh in '0' manually?


Thanks for your help!

[clapointe]

I am not sure why the overwrite wouldn't work in tandem with parallel snappy use, but I've not used it in parallel much. I can help with the latest time, though -- I've used the following in a script in which I identify the final time :

finalTime=$(foamListTimes | tail -1)

Caelan

[cjc96]

Originally Posted by clapointe

I am not sure why the overwrite wouldn't work in tandem with parallel snappy use, but I've not used it in parallel much. I can help with the latest time, though -- I've used the following in a script in which I identify the final time :

finalTime=$(foamListTimes | tail -1)

Caelan

Thanks clapointe!


I'm still not sure why -overwrite wasn't working as expected, it didn't throw an error, and still seemed to overwrite the 0 directory (as opposed to making 1-3) but the final result was seemingly the original block mesh (not the final snappy mesh)


Your recommendation for the time directory worked like a treat though! For clarity however, it turns out you can use:

$(foamListTimes -latestTime)

Which I find to be a bit cleaner.


Thanks again for your help