[sangeet]

Hello,


I am currently running trying to run a unsteady case in SU2 v7.1.1 and I want to restart from a converged steady solution that I already have. I used the 2nd order dual time-step method. Since I need two solutions to restart, I just made two copies of the steady solution, but SU2 diverges before any iterations start. Below is the unsteady paramaters part of the config file.


This google drive link has my case files.
https://drive.google.com/drive/folde...J8SK9aW2xwMNeq

% ------------------------- UNSTEADY SIMULATION -------------------------------%
%
TIME_DOMAIN = YES
%
% Numerical Method for Unsteady simulation(NO, TIME_STEPPING, DUAL_TIME_STEPPING-1ST_ORDER, DUAL_TIME_STEPPING-2ND_ORDER, TIME_SPECTRAL)
TIME_MARCHING= DUAL_TIME_STEPPING-2ND_ORDER
%
% Time Step for dual time stepping simulations (s) -- Only used when UNST_CFL_NUMBER = 0.0
%TIME_STEP= 5e-4
%
% Maximum Number of physical time steps.
TIME_ITER= 100000

% Total Physical Time for dual time stepping simulations (s)
MAX_TIME= 0.1

% Unsteady Courant-Friedrichs-Lewy number of the finest grid
UNST_CFL_NUMBER= 1
%
% Number of internal iterations (dual time method)
INNER_ITER= 100
%
% Restart after the transient phase has passed
RESTART_SOL = YES
%
% Specify unsteady restart iter
RESTART_ITER = 2