<html dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" id="owaParaStyle"></style>
</head>
<body fpstyle="1" ocsi="0">
<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">
<div><br>
</div>
Hi Francesco,
<div><br>
</div>
<div>Normally you would set the fluid BC in the .rea file to be "v " (v + 2 spaces) ... then, in userbc() in the</div>
<div>.usr file you would do something like:</div>
<div><br>
</div>
<div> ux=(1-y*y)</div>
<div><br>
</div>
<div>....</div>
<div><br>
</div>
<div>Does this approach work for you?</div>
<div><br>
Paul</div>
<div><br>
<div style="font-family: Times New Roman; color: #000000; font-size: 16px">
<hr tabindex="-1">
<div id="divRpF964645" 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> Tuesday, May 12, 2015 8:41 AM<br>
<b>To:</b> nek5000-users@lists.mcs.anl.gov<br>
<b>Subject:</b> [Nek5000-users] Newby's question: Inflow IC / BC from external file<br>
</font><br>
</div>
<div></div>
<div>
<div dir="ltr">Hi Neks,<br>
<br>
I'm new to this amazing software, and I'd like to better understand it in order to run some cases.<br>
<br>
Right now I'm trying to impose a steady inflow velocity profile computed outside Nek as boundary / initial condition. I've found lots of threads about this, spread all over the forum, but i can't actually get how to "practically" do this.<br>
<br>
I know this is a dull question, but i can't really sort it out; any help is greatly appreciated!<br>
Thank you<br>
<br>
Francesco<br>
<br>
<br>
<div>PS</div>
<div>As a reference:<br>
<div><a href="https://lists.mcs.anl.gov/mailman/htdig/nek5000-users/2014-September/003058.html" target="_blank">https://lists.mcs.anl.gov/mailman/htdig/nek5000-users/2014-September/003058.html</a></div>
<div><a href="http://lists.mcs.anl.gov/pipermail/nek5000-users/2010-December/001151.html" target="_blank">http://lists.mcs.anl.gov/pipermail/nek5000-users/2010-December/001151.html</a><br>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>