[Nek5000-users] turbChannel: history points and instantaneous velocity field

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

Make sure you file is called <casename>.his

On 20 Feb 2018, at 16:55, "nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> " <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> > wrote:


Hello,


 

Thank you for the reply. The istep loop shall be fine. I tried some other lines in the “if..endif” loop here and they all worked. 


I also commented the if loop and I had the same error information. I really do not know why.


 

Regards,


 

Emily


 

_______________________________________________________________________


 

Hi Emily,


 

Did you call the hpts() subroutine without calling the istep loop?


 

Sincerely,


 

On Mon, Feb 19, 2018 at 3:41 PM <nek5000-users at lists.mcs.anl.gov> wrote:


 

> Dear Nek users,


> 

> 

> 

> I am attempting to use History Points features in turbChannel example and


> unfortunately I run into an issue. In the subroutine userchck, I added:


> 

> 

> 

> if(istep. eq. 1) then


> 

>               call hpts()                       !checkpoints


> 

> endif


> 

> 

> 

> where the file is name “check.his” , the format of which follows the user


> guide:


> 

> 2             !number of checkpoints


> 

> 1. -0.98 1.   !x,y,z locations


> 

> 2. -0.67 4.


> 

> 

> 

> However, I received an error saying: Cannot open history file in


> subroutine hpts(). Has anyone run into this error before?


> 

> 

> 

> Another question really bothering me is that I could not figure out how to


> write out the instantaneous velocity field (u(x,y,z),v(x,y,z),w(x,y,z)) at


> a specific time step (istep). Could anyone please help me on this as well?


> 

> 

> 

> Regards,


> 

> 

> 

> Emily

 

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