![]() Its controls can be found on the Advanced ▸ Hourglass Filtering tab of the solver. If you notice thin axis-aligned streaks of smoke, enable hourglass filtering. If the smoke doesn’t seem to be interacting with collision geometry, increasing IOP Iterations on the Advanced ▸ Collisions tab may help. Increase Max Substeps to fix this problem. If sources and simulation are very fast, than insufficient substepping will manifest as noticeable streaks. To fix this problem, increase Max Substeps and/or increase Padding on the Advanced tab. If you notice staircase-like artifacts in a sparse simulation, then there is insufficient padding. You can attach microsolvers to the pyro solver’s Forces input to apply custom forces to the smoke. However, if voxel size is too small, disturbance in continuous mode can lead to a noisy, undesirable look. This is useful for an avalanche-type effect. When Mode for disturbance is set to Continuous, independent noise will be added at every voxel, creating disturbance at the highest representable scale. ![]() This can be especially useful with simulations of explosions, where a high time scale at the start can capture the violent initial blast. ![]() The Time Scale parameter can be animated. However, this method effectively doubles the number of substeps and is significantly more expensive than Single-Project. Single-Project uses a cheap reflection method that does not add much overhead to the simulation.ĭouble-Project exhibits best vortex preservation qualities. This is the safest option for simulations that involve the divergence field (such as explosions). ![]()
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