[Nek5000-users] turbChannel example

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

Hello,

I am trying to reproduce some of the turbChannel results that were published with Nek5000 in the paper that can be found in the following link:
https://arxiv.org/pdf/math/0205264.pdf

In this paper, two turbulent models are tested: the gradient model and the static Smagorinsky model. The paper also shows results from a coarse DNS for comparison. 

The implementation of the static Smagorinsky model is easily done when starting from the turbChannel example but I am not sure how to implement the gradient model since it involves a tensor product \grad u \dot \grad u. Can anyone point me to an example that has a similar implementation or explain how to implement the gradient model in Nek5000?

Is it correct to assume that the current setup of the turbChannel example in Nek5000 should allow to reproduce the coarse DNS results presented in the paper?

What is the relationship between Re_tau and the Reynolds number (param(2)) set in the rea file?

Any help will be appreciated.

Thanks,
Marco
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4215 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/nek5000-users/attachments/20170321/6ed15cfc/attachment.bin>