[Nek5000-users] Heat/passive scalar solver - Helmholtz

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

Hi Neks,

We simulated the turbulent mixing of passive scalars with the Helmholtz solver. Parameter p22 in the .rea file is set to 10E-09. Our scalar fields show numerical errors, e.g. the scalar volumetric means are not constant but oscillate in time.

Is there a way to reduce the numerical errors / increase the accuracy of the Helmholtz solver? 

Best, Philipp Weiss