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February 16, 2008, 07:30 |
Hi,
I got some weird proble
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#1 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
Hi,
I got some weird problems the other days. First of all, when I start from an steady simple result and switch to turbFoam or transientFoam. The time step is printed out as an integer and does not enlarge, when I use a small time step. I used the controlDict from the tutorial/turbfoam. I was thinking that it depends on the 'application' setting in the controlDict, but it does not change!? A somewhat similar problem occurs when starting the simulation. E.g. renaming the 'steady' directory from '300' to '300.0' and setting the start time to '300.0' openfoam still tries to read the '300' directory!? It actually happens with oodles, transientSimple and turbFoam. Maybe anyone had similar problems before? Another weird problem occurs, when running a polyhedral mesh room (3Mio cells) in parallel on a nec cluster with pbs queueing. The calculation of the CFL number is way to high, about 1*10^12 for a time step of 0.000001 as a mean, but in serial it is around 1*10^-2. In addition I am pretty sure the oodles run in parallel worked out before (with just the above mentioned time print problem); unfortunately I overwrote the log file. I am using version 1.4.1 and 'just' adjusted openmpi with support of pbs (--with-tm) and infiniband (--with-mvapi). Could this have an effect at all? Greetings! Fabian |
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