DEM CFD Simulation
€265.00 Original price was: €265.00.€155.00Current price is: €155.00.
€210.00 Original price was: €210.00.€155.00Current price is: €155.00.
€245.00 Original price was: €245.00.€199.00Current price is: €199.00.
What is the Discrete Element Method (DEM)?
The Discrete Element Method (DEM) is a numerical technique employed to model the interaction between individual particles and boundaries, predicting bulk solids behavior and analyzing granular flows and multiphase flows involving solid particles. It excels in modeling moving boundaries and offers insights into particle flow dynamics. The fundamental working principle of every DEM code involves detecting particle collisions and computing contact forces using the soft-sphere method. Here, particles are considered rigid, and any deformation at contact is simulated as an overlap. DEM systematically tracks each particle in the domain, enabling the prediction of their positions at the subsequent time step.
In simulations integrating solid and fluid motion, Newton’s equations of motion are employed to model discrete particle behavior within the Discrete Element Method (DEM), accounting for particle interactions and forces such as gravity and friction. Simultaneously, Navier-Stokes equations govern fluid dynamics, computing velocity and pressure fields within the fluid domain. The coupling between solid and fluid phases entails the transfer of forces between particles and fluid, considering drag forces and solid-fluid interactions. Iterative procedures ensure the convergence of solutions by updating the motion of each phase sequentially. This coupled approach enables comprehensive modeling of phenomena like sediment transport, particle settling, and multiphase flows, essential for understanding diverse industrial processes and natural systems.
Snapshots of mudflow and transport of irregular-shaped particles: (a) inlet velocity of 0.2 m/s and (b) inlet velocity of 1.0 m/s. From Signed distance field enhanced fully resolved CFD-DEM for simulation of granular flows involving multiphase fluids and irregularly shaped particles by Zhengshou Lai et al.
Simulation of DEM by ANSYS Fluent
The discrete element method is the four-way discrete phase method (DPM) used in ANSYS Fluent. This method involves simulating particle-particle interactions, where collisions and coalescence or breakup phenomena are accounted for, alongside particle-fluid interactions, which influence the flow field through momentum exchange, drag, and heat transfer. Additionally, ANSYS Fluent considers particle-wall interactions, capturing rebound, sticking, sliding, or erosion effects depending on material properties and surface conditions. Furthermore, the model incorporates particle-phase interactions, wherein the dispersed phase interacts with the continuous phase, impacting properties such as density, viscosity, and turbulence. By integrating these four-way interactions, ANSYS Fluent’s DPM capability empowers engineers to conduct detailed analyses, optimize processes, design equipment, and predict performance accurately across various engineering applications.
Discrete Element Method by ANSYS Rocky
Ansys Rocky stands out as a robust 3D Discrete Element Modeling (DEM) Particle Simulation Software, renowned for its ability to rapidly and precisely simulate the flow characteristics of bulk materials.
It excels in handling materials with intricate particle shapes and diverse size distributions, making it indispensable for various applications such as conveyor chutes, mills, mixers, and other equipment used in materials handling.
Rocky seamlessly integrates into the Ansys Workbench suite of products, offering engineers the capability to conduct coupled analyses that combine particle simulations with other physics, such as structural and fluids.
This integration enables engineers to choose between 1-way and 2-way coupling approaches based on the specific requirements of the problem being addressed.
ANSYS ROCKY and Ansys FLUENT COUPLING (DEM-CFD) approach is a promising alternative for modeling granular-fluid systems, enlarging the range of coupled particle-fluid processes that can be managed with numerical simulations.
Ansys Rocky, with its robust Discrete Element Method (DEM) capabilities, offers a wide array of applications across various industries. It is fully integrated with Ansys, enabling advanced coupling with Computational Fluid Dynamics (CFD), Finite Element Method (FEM), and Lattice Boltzmann (LBM) packages, facilitating accurate simulation of multiphase flows. Additionally, Ansys Rocky allows for the simulation of complex particle shapes, including custom 3D and 2D particles, such as high aspect ratio fibers, which can be modeled as rigid or flexible, ensuring a realistic representation of particles.
The software enables the specification of intricate particle motion, including complicated trajectories and free body motion with six degrees of freedom, eliminating the need for external MultiBody Dynamics (MBD) software. Furthermore, Ansys Rocky incorporates well-established breakage models like ABT10 and Tavares models, enabling engineers to accurately simulate particle breakage phenomena.
Fluidized bed with 5.3 million particles colored by vertical velocity component, from Efficient parallel CFD-DEM simulations using OpenMP by Amit Amritkar et al.
Applications of the Discrete Element Method
The Discrete Element Method (DEM) finds applications across a broad spectrum of industries and engineering disciplines due to its ability to accurately simulate the behavior of granular materials and particulate systems.
- Mining and minerals processing industry: DEM is widely used to optimize the design and operation of equipment such as crushers, mills, and conveyor systems by analyzing particle flow, wear, and segregation patterns.
- Pharmaceutical and food processing: DEM aids in the design and optimization of processes involving powders and granular materials, such as tablet pressing, mixing, and granulation, ensuring product quality and process efficiency.
- Geotechnical and civil engineering applications: DEM is employed to study soil behavior, slope stability, and granular flow hazards, contributing to the design and assessment of infrastructure projects such as tunnels, dams, and embankments.
- Manufacturing: DEM is utilized to optimize processes such as powder compaction, injection molding, and additive manufacturing, enabling engineers to improve product quality and production efficiency.
- Environmental engineering: DEM is used for analyzing sediment transport, erosion, and sedimentation processes in rivers and coastal regions, aiding in the management and mitigation of environmental impacts.
Overall, the versatility and accuracy of DEM make it a valuable tool for engineers and researchers across various industries, facilitating process optimization, equipment design, and problem-solving in complex particulate systems.
Time evolution of DEM or CFD-DEM simulations for three different mixing systems: (a) DEM simulation of mixing in a tetrapodal blender, (b) DEM simulation of mixing in a Henschel mixer, and (c) CFD-DEM simulation of early-turbulent mixing generated by a pitched-blade turbine in a stirred-tank. From Experimental Methods in Chemical Engineering: Discrete Element Method by Bruno Blais et al.
CFDLAND expertise in DEM Modeling Using ANSYS Fluent Software
Looking to harness the power of DEM (Discrete Element Method) simulations? Look no further! Our expertise in simulating DEM problems is at your service. Dive into CFD project SHOP, where you’ll discover a plethora of DEM projects waiting to be explored. Whether you’re delving into Enhancing Efficiency in Mineral Processing or Multiphase Flow Modeling, rest assured, our proficiency in DEM simulations will exceed your expectations. You can easily order your project for outsourcing.