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When enabled, RealFlow | Cinema 4D applies default settings. These default values work for most projects with PDB or SPH fluids, but for other materials (granular, viscous, etc.) it is normally necessary to apply custom settings. This also applies to simulations with collision geometry involved.
Min | Max Substeps
Here you find the minimum and maximum numbers of simulation steps. Substeps play an important role for collision detection. If you see particles going through a solid object
- decrease the object's "Cell Size" in the "Volume" tag
- enable "Continous Collision Detection" in the "Volume" tag
- try do reduce the particles speed with a "Drag Force" daemon
- if possible, make the collision object thicker.
- If you see popping particles while the fluid settles try to increase "Min Iterations" and/or "Min Substeps".
Substeps should also be increased when you see distorted polygons in conjunction with rigid or elastic particles and the "Skinner" daemon.
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- The higher the values, the more rigid the material will finally be.
- Iterations are applied per subset, so with substeps value a materials rigidity will also increase.
- For the materials, mentioned above, a fixed number of substeps work bestiterations often works well, e.g. 20 | 20 or 40 | 40.
- If you see popping particles while the fluid settles try to increase "Min Iterations" and/or "Min Substeps".
Accuracy
In most cases this value can be kept. This parameter ranges between 0.0 and 1.0. With
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