Bifröst Resolution attributes

The Resolution attributes can be found in both the bifrostAeroProperties and bifrostLiquidProperties attributes.

Master Voxel Size

The base resolution used for the simulation, in scene grid units. Lower values produce greater detail and accuracy, at the cost of more memory and longer computations.

Typically, you use as high a value as possible, depending on the scale to which the scene was modeled, to get a fairly quick preview as you adjust various settings. However for an accurate preview, the value should be smaller than the smallest feature of the simulation. For example, if you want liquid to drain through a 0.2 unit hole in a collider, then Master Voxel Size should be 0.1 or smaller.

Once you are satisfied with the overall simulation, you can decrease Master Voxel Size to render the simulation or generate a mesh at a higher resolution.

For liquid simulations, you can further adjust the voxel size used for collision, acceleration, and guides relative to the Master Voxel Size by setting the Voxel Scale value in the corresponding attribute group of the bifrostliquidContainer.

For aero simulations, the Master Voxel Size controls the resolution of the voxels used to simulate the FLIP particles directly, and is also used in conjunction with Voxel Size Render Factor to determine the resolution used to advect the render particles by the FLIP simulation.

Voxel Size Render Factor (aero only)

A multiplier to determine the size of the voxels used for render particles, based on the Master Voxel Size. The size of the render voxels is (Master Voxel Size)×(Voxel Size Render Factor), so for example if Master Voxel Size is 0.5 and Voxel Size Render Factor is 0.2, then the render voxel size is 0.1.