Output of channel3D in examples of openlb

[yx19971028]

Hello everyone,

The Channel3d code in examples can be run and a 3D image of the flow velocity is obtained from Paraview.
I wonder how to get the corresponding relationship of turbulence parameters y+ and u+ from the code so as to get the curve graphs between the above two parameters?

XuYang

[mathias]

Hi Xu Yang,

there should be a functor for it. See dogygen ducumentation on the website.

Best
Mathias

[yx19971028]

Hi Mathias,

Thank you for your reply.Do you mean the doxygen ducumentation?
The path of the doxygen documentation is openlb→olb-1.4r0→doc→doxygen.
Is my understanding accurate？

Best
Xu Yang

[stephan]

Dear Xu Yang,

please find the doxygen documentation online at https://www.openlb.net/DoxyGen/html/index.html

The functor for y+ is also listed.

Note that in the example channel3d, y+ is calculated “by hand” (line ~387), whereas computeLatticeVelocity (line ~116) returns u+ e.g. with the musker profile formula.

For details of turbulent channel flow statistics please have a look at the publication by Haussmann et al. https://doi.org/10.1016/j.camwa.2019.04.033

BR
Stephan

[yx19971028]

Dear Stephan,

Thank you for your reply.

Best
Xu Yang

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