<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'>Oh ok. <br><br>Let's say that I leave one inlet as 'v ', but then change the other inlet to some other variable 'v1 ' or 'X ' or whatever. Would this be ok, without interfering with other routines?<br><br>I suppose where this discussion is heading is: What is the possibility of adding a recycling boundary condition explicity in Nek, such that you can apply it like any other boundary condition, say R for example. So, in the routine you now search for this recycling flag 'R', and then run through the setup, rescale etc...?<br><br>-Michael<br><br>----- Original Message -----<br>From: nek5000-users@lists.mcs.anl.gov<br>To: nek5000-users@lists.mcs.anl.gov<br>Sent: Friday, July 16, 2010 4:47:11 PM GMT -06:00 US/Canada Central<br>Subject: Re: [Nek5000-users] New Recycling BC based on interpolation<br><br><br>Hi Michael,<br><br>Use whatever discrimination you like --- I would not suggest<br>modifying the character bcs, however, save that you can enter<br>values in bc(k,f,e,1) for k > 1, for any cbc(f,e,1) = 'v '<br><br>The reason for this is that nek checks explicitly for cbc='v '<br>(v, followed by two spaces) in many locations.<br><br>The correct place for discriminating parameters is in the<br>arracy bc().<br><br>Normally I discriminate by geometry --- e.g., x < x0, or<br>something similar, occasionally involving the unit normals on<br>the face in question - as that can be a stronger discriminator.<br><br>Paul<br><br><br>On Fri, 16 Jul 2010, nek5000-users@lists.mcs.anl.gov wrote:<br><br>> Hi Aleks,<br>><br>> Thank you very much for looking into this. I already have a question; I noticed that you marked several notes dealing with "RBC single inlet -- modify for other cases". I am assuming this means that you have one inlet that you want to recycle, but another inlet that you do not want to recycle, which just happens to be my case.<br>><br>> Can I distinguish in the rea between the two by "v1 " and "v2 " without giving genmap any problems, and then modify the checks in the usr file accordingly? Also, the subroutine rescale_inflow mentions to modify for multiple inlets as well but I do not see where any modification could/needs to be done for it.<br>><br>> - Michael<br>><br>> ----- Original Message -----<br>> From: nek5000-users@lists.mcs.anl.gov<br>> To: nek5000-users@lists.mcs.anl.gov<br>> Sent: Friday, July 16, 2010 3:03:52 PM GMT -06:00 US/Canada Central<br>> Subject: [Nek5000-users] New Recycling BC based on interpolation<br>><br>> Hi Michael and Markus,<br>><br>> Here is a test case for an unsteady pipe flow with Michael's GambitPipe.rea file which sets inlet Recycling BCs based on interpolation from a cross-section downstream that you specify by a multiple of the inlet normal:<br>><br>> http://www.mcs.anl.gov/~obabko/z4.tgz<br>><br>><br>> Let me know if you have any questions.<br>> Best,<br>> Aleks<br>><br>><br>><br>><br>> ----- Original Message -----<br>> From: nek5000-users@lists.mcs.anl.gov<br>> To: nek5000-users@lists.mcs.anl.gov<br>> Sent: Thursday, July 8, 2010 5:06:48 PM GMT -06:00 US/Canada Central<br>> Subject: Re: [Nek5000-users] New Recycling BC method?<br>><br>><br>><br>><br>><br>> No worries, just checkin in to see how it was going, thanks for the update! Look forward to trying it out!<br>><br>><br>><br>> - Michael<br>><br>> _______________________________________________<br>> Nek5000-users mailing list<br>> Nek5000-users@lists.mcs.anl.gov<br>> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users<br>><br>_______________________________________________<br>Nek5000-users mailing list<br>Nek5000-users@lists.mcs.anl.gov<br>https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users<br></div></body></html>