Hi Ratnakumar,
After running a simulation, a simple way to open the file , is to go to the 'Outputs' menu in MIKE 21 FM, and in the list of output files to click on the 'View' button. If the file has been created, it will open up wherever it has been saved.
If this 'View' button is disabled, that means that no file has been generated.
If that's the case, the reason may be that there was an error during your simulation: if the simulation starts normally, you can see the following text in the 'Simulation tab':
======================== COMPUTATION STARTED =========================
If you don't see it, you probably have an error in your setup, and no file is created because the simulation simply didn't start. Check this 'Simulation' tab (or the log file) to identify any error.
Best regards,
Mathieu