[Nek5000-users] About the iobj in the drag calculation

[nek5000-users at lists.mcs.anl.gov]

Thank you very much,Paul. Now I get stuck in the Energy spectrum and two-point correlation, I'll go through the code first, if a problem occurs, I'll show it.
Xianbei









At 2014-05-29 06:54:10, nek5000-users at lists.mcs.anl.gov wrote:
>
>Hi Xianbei,
>
>You can define more objects by picking your
>own surface discriminators (which will 
>be dependent on your particular application).
>
>If you need more than 4 objects, you can increase maxobj
>in SIZE.
>
>Typically, dragx(0) would be the sum of the drag on all
>the objects --- this is sometimes useful.
>
>If you have (say) a 4-sided channel, you can just define
>one object instead of 4, and set it to be the collection
>of all faces for which cbc(f,e,1)='W  '.
>
>Paul
>
>
>
>On Thu, 29 May 2014, nek5000-users at lists.mcs.anl.gov wrote:
>
>> Hi,all:
>     I read Paul's reply in this mail https://lists.mcs.anl.gov/mailman/htdig/nek5000-users/2014-May/002756.html
>     And got to know something about objects. As you say, the object is a collection of faces, here , I have a question about the iboj, how could I know which face it represent with iboj? As in turbChannel.usr,
>      dragx_avg = alpha*dragx_avg + beta*0.5*(dragx(1)+dragx(2))
>      I think it means to do the time-average of the average dragx on planey1 and planey2, as
>      0.5*(dragx(1)+dragx(2))
>  indicates, while how to calculate the dragx on the planex1, planex2, planez1 and planez2? for the maxobj in this example is only 4 and dragx is defined as
>      dragx(0:maxobj)
>
>Thank you
>Xianbei
>_______________________________________________
>Nek5000-users mailing list
>Nek5000-users at lists.mcs.anl.gov
>https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/nek5000-users/attachments/20140529/f3ca7af6/attachment.html>