So, to solve this problem, DynSmagorinsky is here, but wait for it: In the paper, the dynamic Smagorinsky is going to calculate the Coefficient depending on time and space. But it is not how it is implemented in OpenFOAM. In Openfoam it takes an average value for the whole domain, which changes yes, but it's still constant for the whole domain. So, for example, with the dynamic adaptation of the Coef, there shouldn't be a need for damping close to the wall, but here, it is maybe needed somehow, so it's weird and not a really useful model then.