Case Examples

Case Examples

Applications of Granuleworks


Rotary mixer, high-speed mixer, screw mixer, ribbon mixer, V blender, etc.


Merging ducts, flight conveyors, vibrating conveyors, screw conveyors, etc.


Storage and segregation phenomena in a hopper, etc.


Filling phenomenon in a mold, etc.

Heat Transfer

Dryer with heating tubes, etc.

Kneading and Dispersion of Powders and Fluids *

Paddle kneader, etc.

Powdered Fluidized Bed

Simulation of powdered fluidized bed

  • Coupled simulation by Granuleworks and Particleworks

Simulating the mixing process in which the fine powder with cohesiveness to be mixed uniformly. The tendency of the aggregates to be unraveled is captured by the agitator (horizontal blade) that promotes convective/diffusive mixing and the chopper (vertical blade) that promotes shear mixing.

* The right image shows the aggregates only.

Here is a simulation of black and white particles being mixed by a screw with two different directions of rotation.

Mixing simulation that represents the behavior of mild mixing without applying strong force to powder.

Simulation to evaluate the mass flow in the powder storage tank. The powder is colored in the form of stripes for visual representation. The simulation result indicates the right funnel has a uniform flow due to the rectifying cone inside, when the left one has a typical funnel flow.

Simulating a series of processes in which high stress is applied to powder to form it. The simulation result indicates the segregation, which is considered to affect the finished product quality.

Simulation of heating powder. It represents how the temperature of the powder that contacts the heat source (i.e. the heating pipes placed inside the cylindrical container) rises due to heat transfer.

Here is a process of moisture control of powder using a paddle kneader. High-viscosity liquid is added while the powder is stirred, and it is shown how the liquid is evenly mixed with the powder. Dispersion of the liquid into the powder is a difficult operation, but the result of this simulation also shows that the liquid does not disperse sufficiently, resulting in adhesion of the liquid to the wall.

Above:Evaluating thermal distribution, fluid distribution, mixing index, etc.
Below:CG rendering based on the simulation result

Simulating powder fluidized beds, which are widely used in granulation, coating, reaction, and heat treatment processes.

We are revealing the existence of flow defects that adversely affect product quality, by using coupled DEM and FVM simulations to visualize and evaluate the flow conditions in the equipment.

The simulation result represents the behavior of snow adhering to the wall surface, growing, and then falling under by its own weight.

When transporting products that contain a mixture of granules of different sizes and shapes, vibration can cause the granules to segregate in the containers. As a result, what is originally expected to be a uniform mixture to achieve the desired effect may become unsuitable. In this example, how to prevent such segregation of granule products by changing the design of the container is studied.

Simulating segregation phenomena that occur in powder deposited by gravity. The red particles have a large diameter size, while white ones have a smaller particle size. The typical segregation phenomenon is as shown in the left. The right one shows a particular segregation that occurs under certain conditions.

Simulation of granular convection, also known as “Brazil nut effect”, in which large particles rise in the layer. A familiar example of this phenomenon is seen in a bag of muesli.

The model is created with mortar with coarse aggregate and Bingham fluids with granules.
The simulation result would help you predict and evaluate the flowability of fresh concrete based on the L flow value, the velocity distribution, the viscosity distribution, the shear rate distribution, and the shear stress distribution.

A fire prevention system called a “drencher” extinguishes flying fire debris from nearby wildfires and fires in adjacent buildings, and the flying water droplets prevent the spread of fire in cultural property structures. The spraying water is modeled by Particleworks, and the flying fire debris by Granuleworks.

The simulation shows that sand remains in areas where air cannot reach easily, such as between logos, and that the behavior looks physically reliable.