[Nek5000-users] Parameter settings on filterWeight and filterCutoffRatio

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

The meaning of the two parameters depends on the filterType. Typically a filterCutOffRatio of 0.9 works well (for say N=7). There is a weak dependence to the filterWeight but that’s something you need to explore for your case. May be Philipp can tell you more about it including some references.

Stefan

On 1 Sep 2018, at 06:16, "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:

Hi neks,
   Recently I am working on an LES simulation in an annular pipe to see how transverse velocity goes with Re increasing. 
But I am quite wondering how I should set filterWeight and filterCutoffRatio in my example while in the turbChannel demo they are selected to 10 an 0.9 respectively as proposed value.
They should be sensitive parameters in LES simulation, don't they? Is there any references concerned about them to help me see them more clearly? 
If it is convenient for you could you please reply me a url to the reference? Thank you so much for your assistence.



best regard
--

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