In many applications a number of simulations are performed, where the model parameters for the add-on modules are changed, but where the model parameters for the basic hydrodynamic simulations are unchanged.
If the basic flow information from a hydrodynamic simulation is saved in a number of special decoupling output files, it is possible to re-run the simulation in a decoupled mode, where instead of calculating the flow information, it is read from these files. Running a simulation in decoupled mode can significantly reduce the computational time.
If you choose to save decoupling data you have to specify two output file names for a 2D simulation and three output file names for a 3D simulation. You must also specify the frequency (time step factor) by which data is going to be saved. Finally, you must give the name of the specification file for the decoupled simulation. Setting up and run a simulation using this specification file you can not change the basic parameters in the time and domain dialog and the parameters in the hydrodynamic model, but you are only allowed to change the parameters in the add-on modules.
Decoupling output files
Remarks and hints