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2 results about "Particle method" patented technology
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The particle method is simply simulates fluids. There are various traditional methods, such as the finite difference method, the finite element method, the boundary element method etc. These methods have achieved outstanding success. However, there are still a lot of phenomena that are very difficult to simulate with the traditional methods.
A data processing method suitable for a multi-resolution particle method
A data processing method suitable for multi-resolution particle methods includes the following steps: reading initial data and establishing an original model array to start calculation; detecting and judging all particles separately to determine whether particles split or merge, with the judgment condition being whether particles of different sizes flow across precisions; marking and recording the corresponding number of particles that split or merge; constructing two intermediate arrays to store particle information after splitting and merging; updating particle information in conjunction with time nodes, and updating the final particle data and corresponding particle information to the original model array for subsequent calculations, thereby improving overall computational efficiency.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES) +1
Sph-dem coupled system and method for preventing blowout of a screw-type excavator
This invention discloses a blowout prevention system and method for auger excavators based on SPH-DEM coupling, belonging to the field of tunnel engineering construction technology. The system integrates an SPH fluid simulation module, a DEM particle simulation module, a bidirectional coupling interface, a parametric model of the auger excavator, and a blowout early warning module. It uses the Lagrange particle method to discretize the fluid, Hertz-Mindlin theory to solve for particle contact forces, and GPU parallel computing to achieve bidirectional exchange of forces between the fluid and particles. It also integrates multiple key physical quantities to construct a blowout risk criterion. The method includes multi-scale model construction, coupling calculation parameter setting, bidirectional coupling calculation, blowout feature extraction, risk early warning, and parameter optimization steps. This invention simulates the particle migration and blowout mechanism caused by water pressure disturbance in water-rich strata, improving the accuracy of blowout risk identification and early warning capabilities, and providing a scientific basis for the structural design and construction parameter control of auger excavators.
Owner:SHENZHEN UNIV +1