With very small settings, the solver has to take more cells into account and requires more time. The resolution is also responsible for simulation speed. Smaller values create more cells per unit and increase the resolution, while higher settings are mainly used for previews. Unfortunately, this is not possible, because the padding is necessary for the Hybrido solver to work correctly.īy default, the size of a single cell is 0.3 units in each spatial direction – if you work in real world scales, this value equals 0.3 m or 30 cm. In relation to the particle cloud, the surrounding domain often looks too big and it seems as if it could be easily scaled down. The great advantage of an adaptive grid is that the fluid can move freely and there are no boundaries that enclose the fluid and create reflections. With Hybrido 2, the fluid's domain is invisible as long as the simulation has not started, because Hybrido adapts the domain to the fluid's current volume. In grid solvers, the fluid's behaviour and motion is calculated from the interactions between neighbouring cells. Happy simulating with RealFlow's Hybrido! Domains and Gridsīriefly, a domain is a place where your large-scale fluid simulation happens, and this space is subdivided into a grid of cells with exactly the same length. We have also drastically accelerated the creation of splashes and foam. At the same time it is resource-friendly and easy to use. Hybrido is fast, can handle ultra-large amounts of particles and produces incredibly detailed fluids. The domain’s boundary and grid size is only visible during simulation. When you start the simulation you will see an adaptive domain around the grid fluid particles that moves with the fluid. With this mode it is possible to cut away unwanted or unnecessary parts of the mesh according to the plane's position in space. Another field of application is the “Open boundaries” option of the “Hybrido Mesh”. The square indicates the domain's projection plane and shows you how the displacement will be mapped on the fluid, for example. When you add a grid fluid domain to your scene you will see a plane with small cubes at its corners representing the smallest cell size. Hybrido does not use a fixed domain and the node can be placed anywhere in the scene.
Therefore we have named the combination of our own technology and the traditional concept “HyFLIP”. All this results in a higher level of detail and allows you to simulate very fine surface structures and turbulent fluid-object interactions. This state-of-the art technology is combined with Hybrido's easy-to-use workflow. With Hybrido you can work with 20 million, 50 million or even more particles within a reasonable time frame. Since FLIP solvers are faster it is also possible to run simulations with drastically increased particle counts.
Increased simulation speed is just one positive side-effect. The particle-grid approach is very fast, because it requires only a very small number of time steps per frame, while other solvers have to use more substeps to make the fluid stable. In FLIP solvers, the particles carry the velocity information. ”FLIP” stands for “Fluid Implicit Particles” and describes the technology behind this approach.
With this advanced feature you can achieve absolutely realistic results, utilizing the full power of your network machines.Īlthough the Hybrido solvers in previous RealFlow version have already been based on cutting-edge technology, we improved our grid fluid solution further and are proud to present Hybrido for RealFlow 2014! Hybrido is a fluid solver based on the so-called “FLIP” concept. Due to the large amount of particles, all secondary elements are normally simulated as a post process in a network. RealFlow calculates the conditions for splash, foam and mist formation, and automatically creates and controls these elements. With Hybrido, fluid artists are able to simulate impressive shots, like oceans with breaking waves, huge floods, turbulent coasts with cliffs and rocks, or ships travelling through turbulent water during a heavy storm. But, it has always been difficult to fill large areas and volumes with fluids and add secondary effects such as spray. RealFlow’s standard emitters are perfectly suited for highly detailed fluid simulations with tiny splashes and turbulent surfaces. With Hybrido it is possible to simulate everything from floods to ocean scenes – scenes that are hard to create with RealFlow’s traditional particle emitters. This technology also includes the automatic creation of secondary splash and foam particles, as well as mist.
RealFlow's grid fluid solver, also called "Hybrido" (hybrid large dimension liquid solver), is a sophisticated method of simulating medium and large-scale fluids.