Patent ID: 11892387
Assignee: FUJITSU LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A particle simulation method comprising:
acquiring, by a computer, first contact data associated with a first particle belonging to a first region, the first contact data indicating one or more contact particles in contact with the first particle at a first time and a cumulative displacement of the first particle relative to each of the contact particles, having occurred over a contact period up to the first time after the contact is formed;
calculating, by the computer, first position data indicating positions of particles belonging to the first region at a second time following the first time, and receiving, from a different computer through a network, second position data indicating positions of particles belonging to a second region at the second time, the second region bordering on the first region, the computer including a communication interface configured to communicate with the different computer through the network;
detecting, by the computer, based on a calculation result obtained from the first contact data and the first position data, a second particle which is in contact with the first particle and belongs to the first region at the first time and belongs to the first region at the second time by scanning the first contact data once on a memory included in the computer;
examining, by the computer, based on the first position data, whether the first particle and the second particle are in contact with each other at the second time, and copying, when the first particle and the second particle are in contact at the second time, the cumulative displacement of the second particle from the first contact data to second contact data corresponding to the second time;
detecting, by the computer, based on the first position data and the second position data, third particles which are particles, other than the second particle, individually belonging to the first region or the second region and are in contact with the first particle at the second time; and
searching, by the computer, the first contact data for the third particles by scanning the first contact data repeatedly on the memory and, copying, when each of the third particles is registered in the first contact data, the cumulative displacement of the registered third particle from the first contact data to the second contact data.