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Fluidized Bed Two-Way Coupling Simulation: Particle Explosion
Description: I am currently working on a simulation of a fluidized bed with paddle stirring. I am encountering an issue where the calculation only works when the medium is air and the inlet velocity is less than or equal to 17 m/s. If these conditions are not met—for example, if a fluid with higher density is used or the…
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How to mirror the CFD results with Hyperworks CFD
Dear Community, I would like to ask for a support how to mirror the Acusolve CFD results. I have a half model of an aircraft and I would like to make a nice full aircraft plots without needing to re-run the model with mirrored geometry. Unfortunately mirroring results option does not seem to exist in Hyperworks CFD. thanks…
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EDEM and HYPERMESH CFD Coupling
Hello everyone, I'm new here and really excited to be part of this community. I'm currently working on mercury free gold recovery project of which I want to use EDEM and ACUSOLVE couple DEM CFD. I already have CAD of goldkacha which I used solidworks. If anyone has experience with this or can point me in the right…
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Zero gradient boundary in Acusolve
Hi experts, I am simulating a case involving a variable-density fluid propagating in a water tank, and I need to set an outlet at the end of the tank. I tried using a pressure outlet boundary condition (considering hydrostatic pressure), but the results were not very good. Now I want to use a zero-gradient boundary…
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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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what are the difference between coupled solution and the structural solution with mapped temperature
I noticed that the results from the same models with coupled solution and the structural solution with mapped temperature and pressure are different(from pdf of heat transfer analysis training), is it because that within the coupled solution, the displacements of the model will be sent to flow solver to recalculate the…
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CFD-DEM Simulation of a Tablet Coater with Heat and Mass Transfer
Please find the AcuSolve-EDEM geometry files below: https://us.v-cdn.net/6038102/uploads/S8ZX4NMLHIHZ/tablet-coater-geometry.zip Tablet coaters are vital pieces of equipment in the pharmaceutical and nutraceutical industries, widely used to apply a uniform coating layer on tablets for functional or aesthetic purposes. This…
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Why do particles with temperature generate negative temperature particles in the bidirectional coupl
When I generate particles with temperature in the bidirectional coupling between Acusole and EDEM, negative temperature particles will be generated.
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Question about Acusolve-EDEM coupling
Dear experts, I would like to raise a question regarding Acusolve-EDEM coupling. As we know, the volume filtering method is employed to handle the fluid-particle interaction calculations during coupled simulations. However, if I want to simulate variable-density fluids (such as reactive flows, saline flows, etc.), has the…
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How to keep ambient air of constant temp in Simlab acusolve (lets say 100 degC)?
The red arrow marked box shown below is to be tested at an ambient temp of 100 C. How to give constant temp to the ambient air ? (I have considered the ambient air as a solid surrounding the box)
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Question about Acusolve-EDEM coupling
Dear experts, I would like to raise a question regarding Acusolve-EDEM coupling. As we know, the volume filtering method is employed to handle the fluid-particle interaction calculations during coupled simulations. However, if I want to simulate variable-density fluids (such as reactive flows, saline flows, etc.), has the…
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acusolve-edem
I am conducting a dynamic mesh simulation. In AcuSolve, I need to use a UDF (User-Defined Function) to obtain geometric information from EDEM. Could you please provide relevant materials that explain how to write the corresponding UDF?Thanks！
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Multiphase thermal with specific heat temperature dependent materials error?
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How to understand the material diameter of multiphase flow in Simlab?
I have been working on a multiphase flow coupled discrete element model in Simlab recently. When setting up multiphase flow in Simlab, the carrier is water, and the two discrete phases are air and particles. However, the diameter appears under the material subdivision. How should I understand this? Is the diameter of the…
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Using moments to calculate FSAE aero balance
Hi all! I am looking for a way to rigoursly define the aero balance of my simulated aero kit: The CFD is run to convergence with wall-resolved y+ of 2.5 average and 3.7 max, 350 iterations, and origin is at the intersection of the front axle, ground, and symmetery planes with x pointing rearwards and z pointing upwards.…
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CFD Solution does not find my mesh
hi everyone, Why is this happening, "Solution not contain corresponding mesh. Please include valid mesh"? i did the mesh and defined it in the solution as shown below: here is the cutplane of my mesh: *edit: Attach my simlab file. *For meshing and setup, i refered to Tutorials SL2420…
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FSI Solid-Side Multiple Time Step Not Executed, Causing Fluid-Side TCP Error
Hello everyone, I am conducting a SimLab FSI (Fluid-Structure Interaction) analysis and encountered a problem. I would like to seek advice from experienced users. 1. Problem Description The solid side (OptiStruct) was set with multiple time steps, but in practice it does not execute exactly as specified. The fluid side…
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Convergence issues with Acusolve and EDEM coupling
Hi all, Recently, I have been trying to use Acusolve-EDEM coupling to simulate a case of granular column collapse in water. Unfortunately, despite trying various approaches, the granular column always explodes (or bursts apart) in the water during the initial stages of the coupling. Could anyone please help me with this…
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AcuSolve
Description: CFD (Hypermesh) vs AcuSolve Product/Topic Name : CFD (Hypermesh) Are CFD (Hypermesh) and AcuSolve the same tools ?
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When using the Hypermesh CFD software to simulate the official website's "Supersonic Flow in a Conve
When using the Hypermesh CFD software to simulate the official website's "Supersonic Flow in a Converging-Diverging Nozzle" case, after setting the periodic boundary, an "error occurred executing acuPrep" situation occurred during the acuSolver operation. This is the error vlog. The problem lies in the set periodic…
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Mesh ratio size
hi everyone, case: 2D transient, flow over cylinder at Re = 20 000 - 100 000, SST Questions: What is the rule of thumb for mesh ratio size from edge to area of interest (nested mesh) to global mesh size? Should i use mesh ratio 1:2? For example, edge size = 1e-3 meter > nested mesh = 2e-3 meter > global = 4e-3 meter? is…
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Can I use reliably Altair products to simulate CFD on extreme flight conditions?
Description: Usage and limitations of Hypermesh and FlightStream for specific flight conditions in CFD analysis Product/Topic Name : Hypermesh, Hypermesh CFD, Hyperworks, FlightStream Hi everyone! My team is having difficulties evaluating the options with Altair softwares on CFD analysis on specific flight conditions. We…
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Is it possible to input source terms in Simlab?
I am trying to simulate hydrogen absorption in Simlab, mimicking a metal hydride storage reactor. In order to achieve this I need to input two source terms S_t and S_m. S_m represents the hydrogen absorption rate and S_t represents the heat released due to the absorption. In Simlab in seems I can only input UDF's relating…
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Someone can help me with de CFD purposes in diferent secctions of a formula student?
Hi everyone I`m newbie with this tool and I need some support to navigate on the interfaces and do meshings and CFD solves for a formula student purpose. If you want to help me contact me
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Coupled simulation Simlab - Edem
Hello, dear people from the Altair community, I am developing a coupled simulation between Simlab and Edem to simulate erosion in a sample (image below). I parametrized some parameters in the CAD through Inspire because at the end of the process I want to develop a hyperstudy model to easily vary some parameters in the…
