[Nek5000-users] proj_ortho error in pipe flow

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

Hi,

I have made some more tests to find the cause of this issue.
Attached is a laminar pipe flow simulation with temperature and one 
passive scalar. The original setup is from Paul's "nusselt.tgz", where 
he answered another question of mine.

I found that I can reproduce the same error I see in my turbulent 
simulations when there is an additional passive scalar with a different 
type of boundary condition, i.e. Neumann boundary condition at the pipe 
wall for temperature and Dirichlet boundary condition for the passive 
scalar.

Can someone please check my setup and tell me why this causes the 
projection to fail?


I hope to save some computational resources by using the projection. 
However, if it is not possible, I will keep param(94) = 0.

Kind Regards,
Steffen Straub

-- 
Karlsruhe Institute of Technology (KIT)
Institute of Fluid Mechanics

M.Sc. Steffen Straub
Doctoral Researcher

Kaiserstraße 10
Building 10.23
76131 Karlsruhe, Germany

Phone: +49 721 608-43027
E-mail: steffen.straub at kit.edu
Web: http://www.istm.kit.edu

KIT – The Research University in the Helmholtz Association

Since 2010, the KIT has been certified as a family-friendly university.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: lam_pipe_proj_error.tgz
Type: application/x-compressed-tar
Size: 157574 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/nek5000-users/attachments/20170914/8655cc8c/attachment-0001.bin>