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Particle radius = 1.0 / (1000.0 * Resolution1/3)
Although there is no limit with this parameter accepts any positive value, the “Sheeter” daemon does have its limits, and there are situations where it is impossible to fill all holes. This, for example, can be the case when the fluid particles are very fast or when the holes are large. Good values range between 1.0 and 3.5, but this strongly depends on your simulation.
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Let's take a closer a look at two particles of a simulation. We call them A and B. Particle A is moving at a certain velocity which also determines its direction – this is the motion vector. Another vector points in the direction of particle B. The angle (α) between both vectors is measured by the “Sheeter” daemon and compared against “@ alignment threshold”. If this angle is smaller than the given parameter value then a new particle will be created between A and B. The following illustration explains this concept:[ Illustration (mail Ángel “new sheeter daemon notes”, 10.3.2014) ]
@ alignment threshold
This parameter is only available if “Use velocity alignment” is set to “Yes”. Especially with very thin sheets of fluid you can often observe holes, despite very high “Min cavity size” values. Thin sheets of fluids can be created with a “Linear” emitter, for example, or through collisions with objects. These are typical situations where it is necessary to increase “@ alignment threshold” to finally fill all occurring holes. Another case is when the fluid collides with objects. Here, particles are often created in the collision body's corners. To avoid this, please increase the value. The parameter's unit is degrees [deg].
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