<div dir="ltr"><font face="times new roman, serif">Dear Neks,<br><br>I want to simulate turbulent flow in a stenosis, and use outflow boundary condition at the outlet. Because of the possible backflow at the outlet in this case, I want to impose div U>0 at the last layer of the outlet.<br>
<br>I have already seen an example in NEK5000 website (peris) which uses the same boundary condition as I want to impose.<br>In this example, three subroutines are mentioned as the names of the following to apply this boundary condition:<br>
<b>fill_div(div)</b></font><div><font face="times new roman, serif"><b>set_outflow_dist</b></font></div><div><b style="font-family:'times new roman',serif">get_div_const(cdiv)</b></div><div><font face="times new roman, serif">Now, I intend to use the same outlet B.C for a case the same as stenosis in pipe example. The both examples; pipe and peris, have similar geometries. So, may I use these subroutines exactly in the .usr file of stenosis case? or I should do any modification in this case.<br>
<br></font><span style="font-family:'times new roman',serif">Thanks so much in advance.</span><font face="times new roman, serif"><br><br>Omid</font><br></div></div>