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Analyse the distribution of particle over a surface
Hi everyone, I'm simulating a centrifugal spreader for shrimp feed. My model includes the speader and a circular surface that is placed approx 1 meter below the spreader. My goal is to analyse the distribution of mass/particles per distance from the spreader. So far I've tried different types of bin groups but still unable…
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EDEM API - Thermal Expansion
Overview The 'Thermal Expansion' API introduces thermal size change effects into your DEM particles within your EDEM simulation. This API uses the temperature change, and expands/shrinks the particles according to that change. An example is also attached that shows the usage of the API Prerequisite: EDEM 2025.1 or above…
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During post-processing, when I zoom out, the displayed long flexible bodies appear somewhat disconne
Hi Everyone, I am studying long flexible bodies using the Fibers Bonding Model. During post-processing, when I zoom out, the displayed long flexible bodies appear somewhat disconnected. This issue prevents me from observing the entire long flexible body. Do you have any good suggestions? Best regards, Bai
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Hola, Solicite mi prueba de 14 dias para probar EDEM pero no me permite abrirlo, Podrian ayudarme?
Description: Licencia de prueba no me abre Product/Topic Name : EDEM bulksim
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Alguien que me ayude?
Ayuda con este error
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EDEM API :How to assign an initial value to a custom property？
Hello everyone, I'm writing an API for particle-geometry collisions. I want the API to record the number of collisions a geometry object undergoes, convert this collision count into heat using a formula, and store this heat in a custom property. I've already implemented this functionality. Now, I want to assign an initial…
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Where to find the latest EDEM Fluent coupling release and what is the latest software pair tested.
I have tried to find the coupling files but non of the links work. They just lead to 'page not found'. Does anyone know how to get them. In addition, I would be delighted on any information about the latest software pair tested. Have this work been left at 2022 or 2023 level?
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EDEM CUDA API：How to specify particle names in an EDEM CUDA file
I have developed an EDEM body force API whose function is to apply force to particles named "FIX". My API code is correct, but I encountered an issue when writing the .cu file—the .cu file fails to recognize the particles named "FIX". I would like to ask how to implement this function in the .cu file? I have attached my…
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How to Optimize a Continuous Powder Mixer with Altair tools
I want to reproduce the tutorial, for which the python script, I can directly copy the use of photos. In other words, can you provide python scripts and batch files in the tutorial The photos are intercepted at 3 : 03 of the official YouTube tutorial. The compression package provided in the community does not have these…
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EDEM flexible surface
Hello, everyone in the community. I currently want to do a flexible model of corn leaves ( in line with the actual physical behavior, such as bending ) in EDEM, as if hypermesh and EDEM co-simulation can be done. Do you have this information ?
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DEM 지오메트리 불러오기 관련 문의
Description: CAD에서 그려진 부품 도면을 불러오기 했을때 사진과 같이 100%에 도달은 했으나 이 상태에서 무한로딩이 걸리는 에러가 발생합니다. 혹시 해당 문제 해결방법이 있을지 문의드립니다. 감사합니다. 황재서 드림 Product/Topic Name : EDEM 2022 *Note from Community Team - Once you receive a satisfactory answer on your question, kindly mark your answers as "Accepted" so it can help others with similar…
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[EDEM] Are the contact forces in EDEM contat API applied at the particle center?
Hello, I have a question about the EDEM Contact API. In the Contact API’s "calculateForce" function, I see that NCalcForceTypesV3_0_0::SContactResult& contactResults allows us to add a Bond force. For the forces computed here, are they applied at each particle’s center (center of mass or geometric center), or at the…
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Replaced mixer blades not rotating in HyperStudy-driven EDEM simulation
Hello everyone, I am studying the Altair Community tutorial "Combining Machine Learning and Simulation for Bulk Solids Mixing Optimisation" and have encountered a problem while trying to reproduce the workflow. My workflow is mostly set up successfully: HyperStudy generates a new geometry model for the mixer shaft (as an…
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JUST GETTING STARTED
I am just getting started with DEM, what is the best place to start or resource to use?. I have an .stl file to import into my EDEM.
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[EDEM] what is usNormalForce in EDEM contact model API?
Hello, I have a question regarding the usNormalForce parameter of the calculateForce function in the EDEM contact model API. I looked at the documentation, and it describes usNormalForce as follows:"/**< The unsymmetrical normal forces on element 1. This represent the portion of the calculated normal force that causes…
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Is there a corresponding EDEMpy implementation for the Generate Particle method in EDEM?
I’ve been learning to use EDEMpy recently and noticed that there doesn’t seem to be a direct method for importing STL files as particle templates. It appears that the only way is to create particle prototypes using the createMultisphereParticleType() function and then add spheres to them via the addSphere() function. May I…
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[EDEM]The PBF API causes particles to pass directly through the geometry
Hi, everyone! When the particles are subjected to an inward particle body force, they traverse the cylinder geometry without any collision, as illustrated below.The zip file is the complete code. The code is as follows: https://us.v-cdn.net/6038102/uploads/IBD67QJ6DDH3/cpressure.zip
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Action Required: Update to Linux RHEL/CIQ Rocky 9.4 for HyperWorks 2026 Release
Introduction To our valued Altair community, This article provides important advance notice regarding a required change for the upcoming HyperWorks 2026, which is scheduled for release later this year. To maintain the highest standards of security and performance, we are updating the supported Linux operating system…
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EDEMpy: Script to export a simulation deck
Overview: You can export the simulation deck during your simulation. Exporting a deck allows it to be transferred to another location and run using identical simulation parameters. This script replicates the export simulation deck feature in the Analyst. Simulation Deck Prerequisite: To run this script, h5py, numpy and…
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“AcuSolve–EDEM Bidirectional 3‑Phase Coupling” module
Dear Experts, We are currently using the “AcuSolve–EDEM Bidirectional 3‑Phase Coupling” module and have encountered two questions: 1. When selecting “water”as the carrier phase, “EDEM particles” as Discrete Phase 1, and “air” as Discrete Phase 2, we would like to understand how the solver handles particle behavior once…
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GPU Benchmarks for EDEM: Consumer (RTX) vs Professional (V100/A100) Cards?
Hello EDEM Community, I'm in the process of purchasing a GPU specifically for accelerating large-scale particle simulations in EDEM. To make an informed decision, I'm looking for any available performance comparisons or benchmarks when using GPU acceleration in EDEM with consumer-grade vs professional-grade cards, such as:…
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Performance Issue with GPU CUDA Solver – GTX 5090 Slower than GTX 4070
Hi, I am currently working with EDEM 2024 and using the GPU CUDA Solver for my simulations. However, I have encountered a performance issue where my RTX 5090 GPU is performing slower than my RTX 4070 GPU in the same simulation tasks. Thank you very much for your time, expertise, and any guidance you can offer!
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Questions About EDEM's Factory API Version and .stl Particle Import Functionality
Description: Hi everyone, especially fellow EDEM users or developers who might have insights— I’ve run into a couple of questions while working with EDEM’s Factory API and wanted to reach out for help. First off, I’m trying to confirm the latest version of EDEM’s Factory API. Right now, when I check my local EDEM software…
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Mismatch in Standard constant rolling torque equation with EDEM and Mfix
In Mfix DEM, Zhou’s model introduces a non-dimensional rolling torque to resist rotation when two particles are in contact by multiplying rolling friction coefficient with diameter. But EDEM, rolling friction coefficient is multiplied with radius. I didn't understand the difference in these two standard constant torque…
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[EDEM] Direct shear test simulation geometry or example file
I’m currently working on a soil direct shear test simulation in EDEM. I’d like to create a simulation setup similar to the typical laboratory direct shear test device (see attached image). Is there any example geometry or simulation file (e.g., dem file or STL/CAD file) for a direct shear test apparatus that I can refer to…
