In this section you will find the new beta features available in this release. Note that beta features have not been fully tested and validated.
Ansys, Inc. makes no commitment to resolve defects reported against these prototype features. However, your feedback will help us improve the overall quality of the product. We will not guarantee that the projects using this beta feature will run successfully when the feature is finally released so you may, therefore, need to modify the projects.
Important: To use a beta feature the Experimental (Beta) Features checkbox must be enabled on the Options | Preferences dialog.
Divergence-Free SPH Incompressible Solver (DFSPH)
The new Divergence-Free Smoothed Particle Hydrodynamics (DFSPH) brings the IISPH solver improved with a slightly different approach of density correction near boundaries in relation to the one already implemented for IISPH . The main difference is that there is no need of approximating pressure at the virtual ghost particles associated to boundary triangles. This reduces some operations and the need to store a couple of auxiliary arrays.
For more details see Rocky User Manual.
New Pairwise Potential surface tension model
A new surface tension model that couple pairwise surface tension model with physical parameters, replacing the SPH Pairwise Surface Tension external module.
For more details see Rocky User Manual.
New mapping method for 2-way unresolved coupling with Ansys Fluent software
New option on the UI with a new mapping method based on diffusivity equation and back-diffusion.
The diffusion solution mapping process solves a diffusion equation to perform the mapping and smoothing of the volume fraction variables (particle volume fraction and particle volume fraction variation due to particles entering and leaving the domain) and a pure advection equation to all other quantities. This way all other mapped quantities (averaged particle quantities, momentum, and energy sources, for example) are all distributed according to the volume fraction distribution.
The Back-Diffusion method uses the same approach as the pure-advection of the DEM quantities applied in the Diffusion Solution mapping scheme, but uses the inverse of the volume fraction diffusion velocity as the advection velocity, to compute a volume fraction weighted transport of the fluid properties and flow quantities at the position where the particles are located.
For more details see Rocky User Manual.