But, as usual, you don't know what the profile of the calculations were, in particular because you don't know the mode it's operating in/data it's operating on. ("OpenFOAM" is actually many different programs.)

That said, the indications are that the performance is decent for HPC. What I haven't seen is a comparison with Ryzen (or POWER9). There's also a lack of data even on the SIMD hardware in ThunderX2 and POWER9, at least that I've been able to find.