<div dir="ltr"><div><div><div>Hi Barak,<br><br></div>It is a problem with numerical Stability. Decrease DT in your .rea file until the simulations become stable. You could start with 1/2 DT to check if simulation is stable, other wise go for 1/4 DT, and check with this simple test.<br>
<br></div>Thanks,<br></div>Tanmoy<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Dec 6, 2013 at 3:31 PM, <span dir="ltr"><<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
I am testing the example turbJet, and it seems that I have some problem with output. This are the output files:<br>
jet0.f00001<br>
<br>
Moreover, the ran stops with emergency exit at time 5.64 (CFL too large?):<br>
<br>
<br>
282 DNORM, DIVEX 6.2789891850172769E-004 8.4967723454134898E-006<br>
282 5.6400E+00 1.1065E+01 Fluid done<br>
282 5.6400000E+00 1.1955953E-03 6.4269380E-04 9.9999991E-01 e2<br>
t max/min: 0.0000000000000000 0.0000000000000000<br>
CFL, Ctarg! 22.504301079496056 2.0000000000000000<br>
call outfld: ifpsco: T<br>
<br>
283 5.6400E+00 Write checkpoint:<br>
0 283 OPEN: jet0.f00001<br>
<br>
283 5.6400E+00 done :: Write checkpoint<br>
file size = 55. MB<br>
avg data-throughput = 572.1MB/s<br>
io-nodes = 1<br>
<br>
<br>
7 Emergency exit: 283 time = 5.6399999999999677<br>
Latest solution and data are dumped for post-processing.<br>
*** STOP ***<br>
3 Emergency exit: 283 time = 5.6399999999999677<br>
Latest solution and data are dumped for post-processing.<br>
*** STOP ***<br>
5 Emergency exit: 283 time = 5.6399999999999677<br>
Latest solution and data are dumped for post-processing.<br>
*** STOP ***<br>
0 Emergency exit: 283 time = 5.6399999999999677<br>
Latest solution and data are dumped for post-processing.<br>
*** STOP ***<br>
6 Emergency exit: 283 time = 5.6399999999999677<br>
Latest solution and data are dumped for post-processing.<br>
*** STOP ***<br>
4 Emergency exit: 283 time = 5.6399999999999677<br>
Latest solution and data are dumped for post-processing.<br>
*** STOP ***<br>
2 Emergency exit: 283 time = 5.6399999999999677<br>
Latest solution and data are dumped for post-processing.<br>
*** STOP ***<br>
1 Emergency exit: 283 time = 5.6399999999999677<br>
<br>
<br>
<br>
<br>
Thank you,<br>
Barak<br>
<br>
<br>
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</blockquote></div><br></div>