Prefs - Simulation: General

To change the parameters of this tab on project level use the → "Simulation Options: General" dialogue.

General (A)

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 - Threads and Substeps” 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. Please also take a look at → “Quick Start Configuration - Threads and Substeps” for more information.

Stepping (B)

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.

Stop simulation on disk write error

When active RealFlow will stop the current simulation if it encounters disk problems:

• Enable this feature when you export Alembic data to avoid crashes.
• Disk overflows can be avoided with → alternative disk paths under “Export Central”.