Hi neks,<div><br></div><div>I'm trying to simulate a turbulent channel flow like in the presentation "A comparison </div><div>of Nek5000 and OpenFOAM for DNS of turbulent channel flow" of Michael A. Sprague from the last </div>
<div>user meeting (<a href="http://www.mcs.anl.gov/~fischer/nek5000/sprague_nek5000_dec2010.pdf" target="_blank">http://www.mcs.anl.gov/~fischer/nek5000/sprague_nek5000_dec2010.pdf</a> "mid"-case). </div><div>In the presentation it is mentioned that the CFL number is approx. 2 so I have choosen the BDF3/OIFS3 </div>
<div>scheme. However the solution blows up and Nek5000 stops the computation after 49 steps.</div><div><br></div><div>Are there any parameters I have to set in the rea-file to get it work? TCHAR is true and p026 is</div><div>
set to 3. Dealiasing is turned on as well, but I'm not sure if the weight of the filter may be wrong.</div><div><br></div><div>The files of the case are attached.</div><div><br></div><div>Thanks!</div><div>Alex</div>