[locoiam1991]

Hi everyone,

I hope you all and your families are doing well. I am currently performing wall-resolved large eddy simulations on an airfoil with chord 0.09m at Re = 60,000.00 I estimated the size of the Taylor eddies and divided it by two for the first run and three for the second run and used it as the mesh size in the region near the airfoil and in the wake up to one chord. Based on this size, I calculated time step of 0.000028s for a CFL number of 0.7 (which is high for LES). The first mesh has only 17 million elements (I simulated only 20% of the chord in the spanwise direction but I reduced it to only 5% later) and I am doing 15 inner-iterations per time step (which is low 30-40 would have been better) for a physical time of 2 seconds. This simulation is taking a lot of time and I have 6 cases to run. My time constraint is a month. I would like to know what is the best configuration for the computational ressources (memory, hard drive,cores, nodes, etc) that could get me to run them rapidly.

Thank you very much!
Stay safe