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discrete element method

A technology of elements and search methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as expensive, imitable, and expensive particles

Active Publication Date: 2016-08-24
COMMONWEALTH SCI & IND RES ORG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, a 10:1 size ratio becomes more expensive than relatively single-sized particles
A size ratio of 100:1 tends to become too expensive to simulate and therefore simulations are limited to the mid-size range

Method used

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Examples

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Embodiment Construction

[0062] Such as figure 2 The particle simulation system 2100 shown is implemented using a computer system 2102. The computer system 2102 is based on a standard computer, such as a 32-bit or 64-bit Intel architecture computer produced by Lenovo, IBM, or Apple. The process executed by the computer 2102 is defined or controlled by the computer program instruction code or data of the software component or module 2150 stored on the non-volatile (for example, hard disk) storage 2104 of the computer 2102. The process executed by the module 2150 may alternatively be executed by firmware stored in a read-only memory (ROM), or at least partly executed by a dedicated hardware circuit of the computer 2102, such as an application specific integrated circuit (ASIC) and / Or field programmable gate array (FPGA).

[0063] The computer 2102 includes a random access memory (RAM) 2106, at least one microprocessor 2108, and external interfaces 2110, 2112, 2114, all of which are connected via a syste...

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Abstract

A discrete element method for modeling granular or particulate materials that includes a multiple grid search method, which is a hierarchical grid search method in which entities such as particles and boundary elements are assigned based on size to The cells of the corresponding raster. The search method also includes: (a) performing a cell search in the first grid level to determine pairs of entities that meet predetermined criteria for inclusion in a neighbor list for which both entities belong to the first grid level ; (b) each non-empty cell in the first grid layer is mapped to each of the other grid layers, and the adjacent cells in each of the other grid layers are determined and determined to be included in the neighbor list and (c) repeating (a) and (b) for all raster layers.

Description

Technical field [0001] The present invention relates to discrete element processes. Specifically, the invention relates to discrete element methods for modeling granular or particulate materials. Background technique [0002] The Discrete Element Method (DEM) is a process performed by a computer system that allows prediction of the flow and structure of granular (particulate) materials. The main physical phenomena associated with this process are collisions between panicles and between particles and solids (such as equipment). Examples of process applications include but are not limited to: [0003] (i) The crushing and grinding of rocks in ore processing, where in order to improve process efficiency, productivity and equipment design and reduce equipment wear, the data generated by the process provides information about the flow and fracture of particles. [0004] (ii) The mixing of powders and granules used in the manufacture of food, plastics, pharmaceuticals, and household pro...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/10
Inventor P·W·克莱利
Owner COMMONWEALTH SCI & IND RES ORG
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