Hi @Semix,
Yes, it’s fairly typical. If you reduce the number of cores manually as I’ve mentioned above, you should see a reduction in the amount of core hours you’d consume.
Keep in mind a velocity of 84m/s is on the verge of the Incompressible solver’s capability and you’d need a very small timestep to compensate it so that the Courant number is controlled (see resource I’ve sent above). In your case, since the Maximal courant number is set to 0.7, assuming a maximum speed of 84m/s and I’ve measured the smallest element to have an edge lenght of ~0.002m:
\displaystyle C = u\frac{\Delta t}{\Delta x} \tag{1}
\displaystyle 0.7 =84 \frac{\Delta t}{0.002} \tag{2}
\displaystyle \therefore \Delta t \approx 1.7\times 10^{-5}s\tag{3}
Which would take very long to run given your end time of 2 seconds.
Cheers