<div dir="ltr"><div>Hi Ami,<br><br></div>I believe, developing a set_obj() routine followed by tourque_calc() is the easiest thing to do. Then calculate drag(obj) and eventually you can calculate the surface area, and divide it by the drag, to obtain wall shear stress<br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div>Best Regards,<br></div>Tanmoy<br></div></div></div>
<br><div class="gmail_quote">On Thu, Mar 5, 2015 at 2:16 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 dir="ltr"><div><div><div>Hello,<br><br></div>I want to calculate friction velocity or wall shear stress along seveal lines, like lines around circle, my question is what would be the easiest way to do?! defining a line in set_obj and calling torque_calc in userchk or finding the velocity derivatives in userchck and then calculating wall shear stress or even using post processing tool like VisIt or postnek?!<br><br></div>Thanks,<br></div>Ami<br></div>
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