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To change the parameters of this tab on global level use the → "Preferences - Simulation: General" dialogue.

General

FPS Output

The simulation's frame rate.

Threads

Here you specify how many cores will be used for your simulations. Please also take a look at → “Quick Start Configuration – Number of Simulation Threads” for more information.

Processors

This is the number of available CPUs or cores in your system. RealFlow detects active hyper-threading and displays an according number of processors.

Use max. threads

When enabled RealFlow will always use the maximum number of available threads.

Stepping

MIN substeps

Specify the minimum number of simulation steps for → standard particle fluids:

  • Higher values increase simulation time, but also avoid instabilities.
  • For a fixed number of substeps use equal values for “MIN substeps” and “MAX substeps”.
MAX substeps

Specify the maximum number of simulation steps for → standard particle fluids:

  • Higher values increase simulation time, but also avoid instabilities.
  • For a fixed number of substeps use equal values for “MIN substeps” and “MAX substeps”.
  • Decrease this value if “FPS Output” is large – you will see a suggestion in the → “Messages” panel.

 

Please be careful with → HyFLIP simulations. Let's assume you have the following settings:

  • MAX substeps (General: Stepping) = 1
  • MAX substeps (Hybrido: Liquid – Hybrido Solver) = 3
  • In this case, a substeps value of 1 is used for the HyFLIP simulation.
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