I suggest adding topics such as `cfd`, `lbm`, `lattice-boltzmann`, `gpu` in the About section, as explained at https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/classifying-your-repository-with-topics
I suggest adding topics such as
cfd,lbm,lattice-boltzmann,gpuin the About section, as explained at https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/classifying-your-repository-with-topics