[Gj419]

Hello, Everyone.


Currently, I'm learning to perform unsteady simulation on SU2. I run successfully with the SU2 given tutorial unsteady NACA0012 case in compressible part. However, that case is the one which two restart file are given to performing the unsteady simulation. My question is that how to run the this unsteady case without pre-given restart file. I have tried RESTART_SOL = NO , but the results from this simulation is totally different with the given results as shown in the SU2 website. Specifically, there is no lift or drag coefficient periodic oscillation with time iteration. Can anyone tell me the normal process for performing general unsteady simulation in SU2 and take this SU2 tutorial NACA-0012 case as an example to explain. Thanks very much.

[AndreaMichelotti]

Hi,

sadly I can't help you because I am facing the same problem with the RAE constrained optimization tutorial.

I use the same cfg file for both inviscid and viscous flow changing the mesh accordingly but in the first case the optimization runs fine without any external initialization file while the latter stops with the error:

Error in "void CSolver::Read_SU2_Restart_Binary(CGeometry*, const CConfig*, std::__cxx11::string)":  
------------------------------------------------------------------------- 
Unable to open SU2 restart file RAE2822_solution_adj_cd.dat

This file is generated directly within the optimization but in the viscous case it doesn't and it must be given as can be seen running the tutorial without the external files.

I saw that the unsteady tutorial in the design page doesn't require the restart file.