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Estimation of Tavares Breakage Parameters Without Experimental Calibration
Hello everyone, I am currently working on implementing the Tavares breakage model in EDEM for a specific pharmaceutical API. Unfortunately, we do not have access to the required experimental facilities to perform single-particle impact tests or other calibration experiments needed to determine the breakage parameters. I…
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How to access the information with the GPU API in EDEM?
Hi, in my EDEM simulation, i want to delete particles with particular IDs, which are read from a csv file. I have successfuly implemented this function in the cpu mode (delete particles in externalForce). But when I change to gpu mode, the particles cannot be deleted, and I do not know how to transfer the should be…
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Inquiry about AI tools for calibrating scaled-up EDEM simulations to real-world behavior
Hello, I am currently conducting EDEM simulations involving very small particles. Given the high computational cost, scaling up the particle size is an essential step in my workflow to maintain simulation efficiency. As many of you are aware, increasing the particle size in EDEM often leads to discrepancies between the…
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EEPA / HM‑JKR: What surface energy should I use for dissimilar particle contacts?
Hi all, I’m using Altair EDEM and would appreciate guidance on how to define surface energy for cross‑material contacts when using either EEPA or Hertz–Mindlin with JKR. Suppose I have two particle materials: A (surface energy = 5) and B (surface energy = 3) in consistent units (e.g., J/m²). For A–A and B–B contacts, I use…
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GPU for EDEM?
Are these in order of preference?
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PC Specs for EDEM
I have an EDEM 2022 license. Could you please suggest the PC specifications for running simulations efficiently? Additionally, when selecting a GPU, should I prioritize compute capability or memory capacity?
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EDEM export results
Hello everybody When exporting data is it posible to modify the queries in one simulation and then use the dgf file to export the new set of variable with other simulations? I tried both copying the base dfg file to the location of another simualtion and importing it, and, running a btach file with just the export command,…
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Energy Loss EDEM Analyst
Hello everybody When extracting data for the energy loss variables (total, normal, tangential), if the value is negative is it because it has a dissipative behavior? Or what is the correct way to interpret energy loss? Thank you.
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Is there a way to apply force to an individual particle? Posting AGAIN; HELP!!!
I have particles bonded together in the shape of a beam, and I want to apply force to some specific particles so that the entire beam follows it. Currently, in the Creator section, I only see the option to add geometry and assign motion to it. But what if I want to impose motion directly on a particular particle? I see…
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Is there a way to apply a force to an individual particle?
I have particles bonded in the shape of a beam, and I want to apply force to specific particles so that the entire beam experiences deformation because of that force. Currently, in the Creator section, I only see the option to add geometry and assign motion to it. But what if I want to impose motion/force directly on a…
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How to effectively export EDEM data
Good day I am new to EDEM and would like to export a specific data set. We are taking a sample of a bigger batch of particles, between 16mm and 26mm spherical particles, that must represent what is put into the equipment that mixes it to ensure we do not pull an unreliable sample. I need to create a histogram that shows…
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Regarding the exact rotation definition in EDEM
What is the precise definition of the rotation method used for Meta particles in EDEM? I have attempted to determine the defined rotation method through various tests, but I have been unable to figure it out. It seems certain that it is not using the Rodrigues rotation vector method. It appears to be either an Euler angle…
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EDEM 라이선스 이전 관련 문의드립니다.
안녕하세요, Altair 기술지원팀 담당자님. 현재 저희 연구실에서 기존 PC에 설치된 EDEM 라이선스를 사용하고 있습니다. 해당 라이선스를 새로운 PC로 이전하고자 하여 문의드립니다. 다음 사항에 대해 안내를 부탁드립니다. EDEM 라이선스를 다른 PC로 이전하는 경우 기술지원이 가능한지 여부 라이선스 이전 과정에서 비용이 발생하는지 여부 이전 절차 및 필요 정보 (예: Host ID, 라이선스 서버 정보 등) 필요한 정보나 추가로 제출해야 할 사항이 있다면 함께 안내해 주시면 감사하겠습니다. 확인 후 회신 부탁드립니다. 감사합니다.
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[EDEM] How to Query the Torque on a Mixer Blade in a DEM Mixing Simulation?
Hello, I am currently developing a mixer simulation that mixes three types of particles. I would like to obtain the torque acting on the mixer blade, but I am not sure which options I should select in the Query settings. My current understanding is: Geometry: Torque Section: blade(IMPPELER) Query Type: Total? Component:…
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[EDEM API] Varialbe_Cohesion
Hello, I have been working through the EDEM API tutorial and successfully ran 3_Variable_Cohesion. I would like to apply this tutorial to a simulation with three different particle types. Could you please advise which files need to be modified and how they should be changed in order to support three particle types instead…
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[EDEM] Restart from a previously run state
Hello, I would like to restart my simulation from a previously run state and treat it as a new initial condition. Specifically, I run the simulation for 10 seconds, then I want to take that state and restart the simulation again from 0 seconds, applying different conditions or changes from that point onward. Could you…
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[EDEM] EEPA model's initial values
Hello, I am currently running a mixer simulation. I am simulating a mixer that blends three different types of particles, and I am wondering how the initial values for the EEPA model should be set. For the particles themselves, I determined the parameters using the angle of repose via the Open Powder Wizard, and I left the…
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License Error: Unable to check out EDEMGUI License, EDEM v2025.1
I am currently using the student edition of EDEM, and it has been working well for the last few months. I was running a simulation and midway through I got the following error, attached below. I was hoping someone can help me out, I have a University project due in less than a month and I need to view my EDEM simulation…
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How to Generate Spherical Particles in EDEM by Scaling to Specific Volume Values?
Dear EDEM users and team members, I’ve run into a technical question and hope to get some advice from you all. I’d like to know how to generate spherical particles in EDEM that are scaled to specific volume values. For example, I’ve created a spherical particle template with a radius of 10 mm, and I have a CSV file…
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Hi everyone, my EDEM software keeps freezing. Could anyone help me figure out how to fix it?
Dear seniors, I’m having an issue with EDEM 2024: the process gets stuck at 2% when importing particle models in STEP or other formats. Could you please offer some guidance on how to resolve this problem?
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How to define the Aspect Ratio for a non-spherical drag model in CFD-DEM.
I learned from the sieve_base case in Tutorial 6A — Particle Separation in a Harvester, that defining a non-spherical drag model requires defining the Aspect Ratio. However, I am now encountering particles where the length, width, and height are all different, such as elliptical disk-shaped particles or irregular…
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Question regarding particle generation for calibration of different particle types (Dynamic AoR)
I am currently working on a particle mixing simulation and need to calibrate the particle contact parameters. I plan to use the dynamic Angle of Repose (AoR) method using a rotating drum. For parameters involving the same particle type (self-interaction), I assume I can simply generate a single type of particle using a…
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Differences Between CPU and GPU Versions of EDE
Hello everyone, I hope you are all doing well. I am planning to start a new simulation of spiral jet milling using EDEM coupled with Fluent. Due to the high computational cost associated with this work, I am considering switching from CPU-based to GPU-based computation. When I previously worked with EDEM in 2022, I recall…
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EDEM to Simsolid cause localized excessively high stresses.
I am currently importing boundary force data from EDEM into Simsolid for analysis and have noticed localized excessively high von stresses. However, no issues such as local particle penetration were observed. At the same time, when importing different time steps, the location of these localized excessively high stresses…
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Can EDEM identify volume mesh
Everyone in the community ! Suddenly, I have an idea whether EDEM can identify the polyhedral particle grid, and the body grids are connected by bond. Once the bond is subjected to external force, it will be broken. Or whether this function can be realized in the form of API.
