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<div style="font-family: Times New Roman; color: #000000; font-size: 16px">Hi Simon,</div>
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<div style="font-family: Times New Roman; color: #000000; font-size: 16px">It's usually a good idea to break symmetry in some way in order to get the flow</div>
<div style="font-family: Times New Roman; color: #000000; font-size: 16px">to start moving. Usually that's done in useric by calling some type of random</div>
<div style="font-family: Times New Roman; color: #000000; font-size: 16px">number generator to put small amplitude disturbances into the field.</div>
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<div style="font-family: Times New Roman; color: #000000; font-size: 16px">Paul</div>
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<div id="divRpF784602" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> nek5000-users-bounces@lists.mcs.anl.gov [nek5000-users-bounces@lists.mcs.anl.gov] on behalf of nek5000-users@lists.mcs.anl.gov [nek5000-users@lists.mcs.anl.gov]<br>
<b>Sent:</b> Thursday, May 07, 2015 8:17 PM<br>
<b>To:</b> nek5000-use.<br>
<b>Subject:</b> [Nek5000-users] Rayleigh example - no flow development<br>
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<div dir="ltr">Dear all neks,
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<div>Recently I have tried to modify the rayleigh example to my case. However, I discovered that no flow field is developed after a long time. All velocities are zero. I guess I miss something important in the example. Anyone knows which part of the code could
lead to this?<br>
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Also, although I start with T = -z, I got asymmetric initial condition, something not as I specified as viewed in postnek. Did I miss any point in the .rea and .usr? The files are attached here. They are modified rea and usr from rayleigh to my case.<br>
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Thank you very much.</div>
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<div>Regards,</div>
<div>Simon</div>
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