decaying isotropic turbulence simulation

[soaringxmc]

If you need to compute decaying isotropic turbulence, please refer to the case in the paper.
Xiao, Maochao, Alessandro Ceci, Pedro Costa, Johan Larsson, and Sergio Pirozzoli. “CaLES: A GPU-accelerated solver for large-eddy simulation of wall-bounded flows.” Computer Physics Communications 310 (2025) 109546.

The DIT case data and scripts can be found here.

https://drive.google.com/drive/folders/1NkOWpRjMMAMorHeNoqOSdu8duFxPeLlb
https://drive.google.com/drive/folders/1YJjINCc6frpc2bjZeNKEta-Q9Mh5i14L?usp=sharing

[soaringxmc]

@zz-blue has just done the DIT case recently with CaLES @chenjiaweiDr

[soaringxmc]

@b-fg also shared a DIT case calculation with waterlily, which might also be a good reference.
https://github.com/b-fg/HIT.jl

[chenjiaweiDr]

Thank you very much, I requested access for the Google Drive just now, I appreciate you sharing it.

[soaringxmc]

done

[chenjiaweiDr]

When running the DIT case, I got the following error. What could be the reason?

[soaringxmc]

@zz-blue might be able to help, since she just finsihed the DIT case.

I am not able to tell the exact reason, but it may be caused by incorrect loading of the restart file, since the error occurs in load.f90.

[soaringxmc]

Hi @zz-blue

It might be of great use to create a repo for the DIT case. Just like this one for waterlily.
https://github.com/b-fg/HIT.jl?tab=readme-ov-file

If you would like to, we can link your repo to the CaLES website. There should be a number of people who need to study this case when they use CaLES for fundamental LES studies, including traditional LES models, and machine learning based models. For instance, a PhD student here has started to use SmartFlow+CaLES for SGS model studies, and DIT is going to be the first training case.

[zz-blue]

@chenjiaweiDr @soaringxmc

I've created a repo for running the DIT case with CaLES.

https://github.com/zz-blue/DIT_CALES

Due to the large size of some generated files, they are not included in the repository.
However, all necessary input files and pre-/post-processing scripts required for the simulation are provided.
If you have any suggestions or improvements, please feel free to let me know!