<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>
Can you just save them without writing them out?
<div><br>
</div>
<div>I would compute the time derivative during the run and then write that out?</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div style="font-family: Times New Roman; color: #000000; font-size: 16px">
<hr tabindex="-1">
<div id="divRpF303622" 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> Monday, April 24, 2017 11:24 AM<br>
<b>To:</b> nek5000-users@lists.mcs.anl.gov<br>
<b>Subject:</b> Re: [Nek5000-users] Time derivative of Scalar field<br>
</font><br>
</div>
<div></div>
<div>
<div dir="ltr">Hey Paul,
<div><br>
</div>
<div>In my case, the time step is very small, and I want the scalars (initially a small gaussian blob in the center of the cylindrical domain) to hit the wall. For that to happen I need too many files to print out. Right now I am printing them out at 0.1*(vertical
diffusion time) and get say 100 files to hit the wall. While my time step is 1e-4 * (vertical diffusion time) for RB convection.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Saikat</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr"><span style="background-color:rgb(255,255,255)"><font color="#444444" face="georgia, serif" size="2">Saikat Mukherjee,</font></span></div>
<div dir="ltr"><font color="#444444" face="georgia, serif" size="2">PhD Student,</font></div>
<div dir="ltr"><font color="#444444" face="georgia, serif" size="2">Paul Research Group - <a href="http://www.me.vt.edu/mpaul/" target="_blank">http://www.me.vt.edu/mpaul/</a><br>
</font>
<div><span style="background-color:rgb(255,255,255)"><font color="#444444" face="georgia, serif" size="2">Engineering Science and Mechanics,</font></span></div>
<div><span style="background-color:rgb(255,255,255)"><font color="#444444" face="georgia, serif" size="2">Virginia Tech.</font></span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">On Mon, Apr 24, 2017 at 12:20 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">
<div>
<div style="direction:ltr; font-family:Tahoma; color:#000000; font-size:10pt">
<div><br>
</div>
Hi Saikat,
<div><br>
</div>
<div>Any reason to not save a few time steps and apply finite differences?</div>
<div><br>
</div>
<div>Paul</div>
<div><br>
<div style="font-family:Times New Roman; color:#000000; font-size:16px">
<hr>
<div id="m_-2092132410790415338divRpF29090" style="direction:ltr"><font face="Tahoma" size="2" color="#000000"><b>From:</b>
<a href="mailto:nek5000-users-bounces@lists.mcs.anl.gov" target="_blank">nek5000-users-bounces@lists.<wbr>mcs.anl.gov</a> [<a href="mailto:nek5000-users-bounces@lists.mcs.anl.gov" target="_blank">nek5000-users-bounces@lists.<wbr>mcs.anl.gov</a>] on behalf of
<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.<wbr>gov</a> [<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.<wbr>gov</a>]<br>
<b>Sent:</b> Monday, April 24, 2017 11:10 AM<br>
<b>To:</b> <a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.<wbr>gov</a><br>
<b>Subject:</b> [Nek5000-users] Time derivative of Scalar field<br>
</font><br>
</div>
<div>
<div class="h5">
<div></div>
<div>
<div dir="ltr">Hello Neks,
<div><br>
</div>
<div>I want to find out the time derivative of Scalar field in my Rayleigh Benard calculations. Can you give me any idea how to go about it? Right now I get the scalar field only along with the primitive variables. But I want to get the time derivative field
of the scalars (dc/dt).</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Saikat</div>
<div><br clear="all">
<div>
<div class="m_-2092132410790415338gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr"><span style="background-color:rgb(255,255,255)"><font color="#444444" face="georgia, serif" size="2">Saikat Mukherjee,</font></span></div>
<div dir="ltr"><font color="#444444" face="georgia, serif" size="2">PhD Student,</font></div>
<div dir="ltr"><font color="#444444" face="georgia, serif" size="2">Paul Research Group - <a href="http://www.me.vt.edu/mpaul/" target="_blank">http://www.me.vt.edu/mpaul/</a><br>
</font>
<div><span style="background-color:rgb(255,255,255)"><font color="#444444" face="georgia, serif" size="2">Engineering Science and Mechanics,</font></span></div>
<div><span style="background-color:rgb(255,255,255)"><font color="#444444" face="georgia, serif" size="2">Virginia Tech.</font></span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
______________________________<wbr>_________________<br>
Nek5000-users mailing list<br>
<a href="mailto:Nek5000-users@lists.mcs.anl.gov" target="_blank">Nek5000-users@lists.mcs.anl.<wbr>gov</a><br>
<a href="https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users" rel="noreferrer" target="_blank">https://lists.mcs.anl.gov/<wbr>mailman/listinfo/nek5000-users</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</div>
</div>
</body>
</html>