SimScale CAE Forum - Latest posts

Hi, I have a very complex engine geometry and struggle with generating a mesh. Which settings do I best use for it? Has anyone been at this point and figured it out?

This is a simulation involving the assembly of four parts. The assembly process involves fixing the bottom-most part in place and moving the top-most part by -2.6 mm in the y-direction. The goal is to determine the stress and strain for each part. However, the calculation is not progressing at all. Please advise on how to resolve this issue. https://www.simscale.com/workbench/?pid=522354998091871…

I’m working on a solar collector underneath a synthetic grass field, and I want to know the effect of the solar load on the grass and what the temperature gradient of the underlying layers is. I have modeled a cross section of the collector field. The top layer is air, which is set to transparent in all the boundary conditions I’ve set for it. The walls of all the other layers I’ve set to opaque …

Hi, for my thesis I’m currently creating a conjugate heat transfer simulation. The meshing is not working for my current CAD, because due to the import and translation SimScale itself is generating faults in the model. Has anyone experienced something similiar or could help?

Hi, this is my first project on SimScale and have done all starting tutorials and I believe I applied exact steps from on of them to get internal flow volume and couldnt acieve the necessary result. Here you can see my last attempt on it, the circle opening will be for fans and those long walls with 3 and 3 holes are meant to be the exit for air. Would be really glad for any help since I already …

I’m trying to complete the Tutorial: Battery Pack Cooling of an FSAE Car , however my results do not match the expected outcome. I’ve double checked the instructions from the tutorial, but I can’t pin point what I’m doing wrong. From the electric potential view, it seems like there is an open contact in the string. And air flow is way lower than expected. My project is located here . Any guidanc…

When you’re assigning materials in a fluid analysis, it really matters that the material you pick has the right physical traits for the run. In different kinds of analysis, you might need density, dynamic viscosity, thermal conductivity, and also specific heat, it depends. If the outcomes look kind of odd, like not what you’d expect, I would start by double checking whether the material propertie…

Hi, It depends on your specific case. For example, if you are looking to study the bolts/immediate surroundings or if you are worried that the bolts might fail, it wouldn’t make sense to greatly simplify the bolts. But if the bolts are just there to transfer the load from one part to another and your regions of interest are far, you won’t gain much from capturing them as accurately as possible. S…

Hi, You will find typical troubleshooting steps here: https://www.simscale.com/knowledge-base/divergence-simulation-knowledge-base/ In short, look around the region where the divergence took place. There will usually be small faces/gaps in the CAD which cause poor mesh quality locally. The most robust workflow is to clean up the CAD model, removing these details. In some (rare) cases, adding mesh…

Hi, Is this some sort of high frequency signal (e.g. from an antenna)? If so, this is not possible at the moment, but a high frequency solver will be eventually available within the Emag solver. I don’t think it would account for wind, though, as it would be purely an Emag solver.

Hi, Have you already checked out this tutorial, involving solar load? https://www.simscale.com/docs/tutorials/thermal-comfort-meeting-room/ On a side note, I don’t think that setting up this aluminum cover as a porous media would allow it to block any radiation. If you had solar load off, you could have set an actual solid as “semi-transparent” part, but it sounds like you need solar load, so thi…

Hi, For analysis types such as incompressible, you must delete the solid parts after creating the flow region: https://www.simscale.com/knowledge-base/flow-volume-extraction/#:~:text=In%20addition%2C%20delete%20the%20solid%20parts%20to%20be%20able%20to%20use%20the%20model%20in%20an%20analysis%20type%20that%20requires%20a%20single%20fluid%20region Cheers

Hi, My colleagues are looking into improving this behavior, but for now defining the remote force BC without a table should allow the simulation to run. On a side note, keep in mind that all CAD models and results in projects from community users (like yours) can be viewed/downloaded by anyone in the community. Cheers

Hello, The compressible solver is pressure-based, so it will typically be stable for velocities below 0.7-0.8 Mach, so I would not expect this analysis that you are referring to to run. Currently the only solver in SimScale that can handle transonic/supersonic flow is the multi-purpose solver, but do note that hypersonic flow such as Mach 10 is extremely tricky to run.

Thank you for your reply. I would like to analyze the distortion experienced by the shaft during opening and closing operations, resulting from the interference fit between the seat and the disc.

Hi @6585a0bd203841 , Welcome to the community! You have laid out an exceptionally robust validation sequence. LPBF copper cold plates are notoriously tricky to simulate accurately because the as-built internal channel stochasticity (powder agglomeration and layer stepping) heavily drives both pressure drop and convective heat transfer. To answer your question directly: You should absolutely calib…

Hi @rommel_exe , Welcome to the forum! I took a look at the project link you provided and investigated the setup under the hood. The external flow volume operation is failing because of specific surface defects in your CAD model. The system log flags exactly where the Boolean subtraction is crashing: it is tripping over edge 8 , face 2 , and face 910 . When modeling complex aerodynamic assemblies…

SimScale does not currently support free fluid‑driven rotation where the solver computes the rotor RPM from aerodynamic torque. In CFD, rotating machinery is simulated using prescribed rotation : MRF rotating zone – steady-state performance sweep at a fixed RPM. Sliding mesh (AMI) – transient simulation with a prescribed rotational speed. Both approaches require the user to define the rotational …

Hello, Did you train the Physics-AI model using multiple parametric simulations, or did you use one of a pretrained pump prediction model? Could you please elaborate on the methodology and workflow you used?