<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"><!-- P {margin-top:0;margin-bottom:0;} --></style>
</head>
<body dir="ltr">
<div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif;" dir="ltr">
<p>Hi all,</p>
<p><br>
</p>
<p>Just wondering if there are any examples of simulation of isotropic turbulence in a triply periodic box (using linear forcing or otherwise).</p>
<p><br>
</p>
<p>I'm hoping to obtain a flow similar to that of</p>
<p><br>
<a href="https://pdfs.semanticscholar.org/f7b3/c77341d66da230177f6528344a3afd647c2d.pdf" class="OWAAutoLink" id="LPlnk968464" previewremoved="true">https://pdfs.semanticscholar.org/f7b3/c77341d66da230177f6528344a3afd647c2d.pdf</a></p>
<p><br>
</p>
<p>which seems to have a relatively simple forcing function proportional to velocity. However, when using F_i = A*u_i in the userf subroutine, I end up with something that isn't isotropic.</p>
<p><br>
</p>
<p>Any help or advice would be greatly appreciated,</p>
<p><br>
</p>
<p>Cheers,</p>
<p><br>
</p>
<p>Lee</p>
</div>
</body>
</html>