Case Examples

Case Examples

Mortar + coarse aggregate are modeled by Bingham fluid + powder.

The L-flow value, velocity distribution, viscosity distribution, shear rate distribution, and shear stress distribution can be predicted and evaluated as the flowability of fresh concrete.

Simulating the progress of the excavator through the soil.

It is possible to evaluate the torque applied to the cutter as it rotates.

Debris flow simulation on the debris flow breaker
by coupled analysis of rigid body and fluid

Disaster risk reduction Planning Workshop, NPO, Tokyo, Japan
Hajime Ikeda, Takanori Ito

Tsunami-induced tetrapot behavior analysis
Particleworks×RecurDyn coupling

Analysis of fire prevention equipment for historical buildings

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.

Simulation of fire protection equipments for important buildings by particle method CFD

We chose a wooden structure called a Yosemune-zukuri (hipped roof), as the target building for the water gun simulation. Particleworks simulated that the water can reach the top of the roof from the four water discharge guns placed diagonally across the building. This video is a CG rendering of the simulation result.

Simulating a tsunami with a wave height of about 4 meters and a speed of 15 meters per second reaching the front of a nuclear power plant.

The calculations showed that the tsunami was mostly damped by the dune in front of the plant site, which was about 10-15 m high, but some of the tsunami went over the dune and entered the plant site.

In this simulation, the fluid and building were modeled with about 2.4 million particles and 3.9 million particles respectively, and the scale of the actual nuclear power plant was simulated as it is.

【Analysis conditions】
Region:1.0km x 0.6km
Event time : 1 minute
Total number of particles : 630 million

Simulating a hairpin-sized rod-like object flowing through an S-pipe with water, with the S-pipe as a polygon wall and the rod-like object as a rigid particle.

【Analysis conditions】
Region:25cm x 25cm
Event time : 1.5 seconds
Total number of particles :  About 200000

*CG rendering  based on the simulation result

Simulating the situation in which a liquid with a density of 1,000 [kg/m3] stagnates in an S-pipe, and a gas with a density of 10 [kg/m3] is blown in from the bottom of the pipe. The gas-liquid density ratio in this case is about 100.

【Analysis conditions】
Region : 25cm x 25cm
Event time : 4.0 seconds
Total number of particles:About 25000