[dwstevens]

I am looking for the preferred method for starting a dual time step solution.


So far my procedure is:
1. Perform a single time step in the time domain without dual time stepping to generate a single restart_flow_00000.dat file
2. Enable dual time stepping (1st order) and run the solution from time step 1.


However, when I do this I get the following error:

"There is no flow restart file restart_flow_00000.csv"


I have enabled reading of binary restart files. Not sure what I am missing or if I am just going about it all wrong.


Thank you,


David Stevens
Staff Engineer
Peregrine Turbine Technologies

[dwstevens]

Update,


I have figured out the reason for the error. My simulation includes a rotating wall. Apparently, when running in the time domain with this feature a solution_flow.csv file is also required for the restart. Once I added "CSV" to output files (below) the problem was resolved



OUTPUT_FILES= (RESTART, CSV, PARAVIEW, SURFACE_PARAVIEW)


I would still be interested in knowing preferred methods for initializing dual time stepping solutions.


David

[talbring]

Make sure that "READ_BINARY_RESTART" is really set to "YES" (which is also the default if that option is not present). I just tested it with 7.0.3 and it works for me.

[pro_]

The problem is still there, must the option READ_BINARY_RESTART= YES be set from the start of the simulation? or can we add it once the simulation has ended and want to restart it. I am facing the same problem with my dual time step restart where it asks for a restart_flow.csv. I wouldn't want to add the CSV option in my OUTPUT_FILES as this would only increase the memory. Any way to get round this? I have tried READ_BINARY_START= YES on the version 7.0.3 version and im still getting the error.

[dwstevens]

Originally Posted by talbring

Make sure that "READ_BINARY_RESTART" is really set to "YES" (which is also the default if that option is not present). I just tested it with 7.0.3 and it works for me.

talbring,


Thank you for your response. I am running v7.0.3. Reading the binary restart file has worked for me with non-time domain solutions but as soon as the time domain is activated I get the same error.


Also, I attempted to output a binary restart file by specifying it in that output options as it is mentioned in the config template. However the option is not recognized by SU2 and throws an error. Maybe this is unnecessary and the the standard restart file is the "binary restart file"?


Thank you,


David Stevens
Staff Engineer
Peregrine Turbine Technologies