# Latest **URL:** https://www.simscale.com/forum/latest.md [Latest](https://www.simscale.com/forum/latest.md) · [Categories](https://www.simscale.com/forum/categories.md) --- ## [Guide to Clear and Understandable Forum Posting](https://www.simscale.com/forum/t/guide-to-clear-and-understandable-forum-posting/99461)
**Author:** [@igaviano](https://www.simscale.com/forum/u/igaviano)\ **Replies:** 0\ **Last updated:** [November 19, 2024, 2:05pm UTC](https://www.simscale.com/forum/t/guide-to-clear-and-understandable-forum-posting/99461 "2024-11-19T14:05:24Z")
Hi SimScale Community! :wave: We in the Support Team have noticed that some users are unsure about what to include in their forum posts to get quick and effective help. Let’s make the process smoother! Here are three e… --- ## [Downloading issues](https://www.simscale.com/forum/t/downloading-issues/101397)
**Author:** [@chazijian](https://www.simscale.com/forum/u/chazijian)\ **Replies:** 0\ **Last updated:** [October 15, 2026, 2:16pm UTC](https://www.simscale.com/forum/t/downloading-issues/101397 "2026-10-15T14:16:04Z")
Hi everyone, I’m running a steady-state incompressible case (SIMPLE, k-omega SST, ~15.3 M cells, four meanVelocityForce momentum sources) and I’ve hit a wall with downloading results, so I’d appreciate any advice. The … --- ## [PWC Analysis request: Please keep colors uniform](https://www.simscale.com/forum/t/pwc-analysis-request-please-keep-colors-uniform/101396)
**Author:** [@acampanario](https://www.simscale.com/forum/u/acampanario)\ **Replies:** 0\ **Last updated:** [October 15, 2026, 11:37am UTC](https://www.simscale.com/forum/t/pwc-analysis-request-please-keep-colors-uniform/101396 "2026-10-15T11:37:48Z")
If possible it would be nice to keep colors uniform, specially for terrain roughness, since they are (at least for us) always the same six categories (citycenter/urbanforest/suburban/rough/open/water). But in one analys… --- ## [Applying transient surface heat flux to an annular brake-pad contact region without partitioning the CAD](https://www.simscale.com/forum/t/applying-transient-surface-heat-flux-to-an-annular-brake-pad-contact-region-without-partitioning-the-cad/101395)
**Author:** [@Samridhi](https://www.simscale.com/forum/u/Samridhi)\ **Replies:** 0\ **Last updated:** [October 14, 2026, 2:43pm UTC](https://www.simscale.com/forum/t/applying-transient-surface-heat-flux-to-an-annular-brake-pad-contact-region-without-partitioning-the-cad/101395 "2026-10-14T14:43:28Z")
Hi everyone, I’m working on a transient thermal simulation of a Formula Student brake disc in SimScale. The disc geometry is already imported, but its friction faces are continuous and have not been partitioned into se… --- ## [Aerodynamic drag analysis of a 3D wing profile at high speed (80 m/s). Checking mesh quality and result validity.](https://www.simscale.com/forum/t/aerodynamic-drag-analysis-of-a-3d-wing-profile-at-high-speed-80-m-s-checking-mesh-quality-and-result-validity/101391)
**Author:** [@honzanovak](https://www.simscale.com/forum/u/honzanovak)\ **Replies:** 0\ **Last updated:** [October 10, 2026, 6:01pm UTC](https://www.simscale.com/forum/t/aerodynamic-drag-analysis-of-a-3d-wing-profile-at-high-speed-80-m-s-checking-mesh-quality-and-result-validity/101391 "2026-10-10T18:01:24Z")
Hi everyone, I am simulating the aerodynamic drag of a 3D wing profile and I would highly appreciate it if someone could review my project setup and results to tell me if they are realistic and objective. Model & Setup… --- ## [Meshing error](https://www.simscale.com/forum/t/meshing-error/101388)
**Author:** [@upasse](https://www.simscale.com/forum/u/upasse)\ **Replies:** 0\ **Last updated:** [October 8, 2026, 4:52pm UTC](https://www.simscale.com/forum/t/meshing-error/101388 "2026-10-08T16:52:21Z")
Run 2 Velocity field started diverging to a value of 1.10082e+07 m/s near the position: (27.09, 26.69, -2.818). Please check the mesh quality near the reported location and try refining the mesh. If the problem occurre… --- ## [Creating inner flow volume](https://www.simscale.com/forum/t/creating-inner-flow-volume/101387)
**Author:** [@upasse](https://www.simscale.com/forum/u/upasse)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 10:15pm UTC](https://www.simscale.com/forum/t/creating-inner-flow-volume/101387 "2026-10-07T22:15:16Z")
Hello I want to created an inner flow volume with this Rhino model, the instruction are not clear how and why this does not work, can someone send me a visual example what I need to change? I have two boxes with inner v… --- ## [OpenFOAM mesh import fails even for a validated 8-cell cube](https://www.simscale.com/forum/t/openfoam-mesh-import-fails-even-for-a-validated-8-cell-cube/101385)
**Author:** [@stout0110](https://www.simscale.com/forum/u/stout0110)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 7:59pm UTC](https://www.simscale.com/forum/t/openfoam-mesh-import-fails-even-for-a-validated-8-cell-cube/101385 "2026-10-07T19:59:29Z")
Hello SimScale Support, I am learning Gmsh and trying to import a NACA2412 wing mesh into SimScale. Both the wing and a tiny, validated OpenFOAM cube fail with the same generic upload error. I only need to import the me… --- ## [Nonlinear static runs stuck at 0% with no Solver Log – repeated twice](https://www.simscale.com/forum/t/nonlinear-static-runs-stuck-at-0-with-no-solver-log-repeated-twice/101331)
**Author:** [@kongye123](https://www.simscale.com/forum/u/kongye123)\ **Replies:** 7\ **Last updated:** [October 7, 2026, 1:45pm UTC](https://www.simscale.com/forum/t/nonlinear-static-runs-stuck-at-0-with-no-solver-log-repeated-twice/101331 "2026-10-07T13:45:05Z")
Hi SimScale Support / Community, I am experiencing a repeated issue where a nonlinear static structural simulation remains at 0% and never generates a Solver Log. I would like to determine whether this is a compute/job… --- ## [Incompressible CFD workflow unavailable on metric fluid-only geometry](https://www.simscale.com/forum/t/incompressible-cfd-workflow-unavailable-on-metric-fluid-only-geometry/101380)
**Author:** [@Bjkadb](https://www.simscale.com/forum/u/Bjkadb)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 1:45pm UTC](https://www.simscale.com/forum/t/incompressible-cfd-workflow-unavailable-on-metric-fluid-only-geometry/101380 "2026-10-07T13:45:01Z")
I am trying to set up a steady external-airflow case in this public SimScale project: https://www.simscale.com/projects/Bjkadb/akjbdba\_593241773/ The project uses the Boeing 777-300ER STL \`aircraft\_clean.stl\`. I created… --- ## [Eddies in return path of electromagnetic simulation](https://www.simscale.com/forum/t/eddies-in-return-path-of-electromagnetic-simulation/101377)
**Author:** [@david\_gmail](https://www.simscale.com/forum/u/david_gmail)\ **Replies:** 0\ **Last updated:** [October 6, 2026, 7:57pm UTC](https://www.simscale.com/forum/t/eddies-in-return-path-of-electromagnetic-simulation/101377 "2026-10-06T19:57:59Z")
Hi there. I’ve been modelling an assymetric lateral solenoid, that should create force in the x-direction. In the return path, there are some strange eddies (on the upper right hand leg in the picture attached. They mar… --- ## [Could run electromagnetics simulation weeks ago, cannot now](https://www.simscale.com/forum/t/could-run-electromagnetics-simulation-weeks-ago-cannot-now/101376)
**Author:** [@awc008](https://www.simscale.com/forum/u/awc008)\ **Replies:** 0\ **Last updated:** [October 6, 2026, 1:19pm UTC](https://www.simscale.com/forum/t/could-run-electromagnetics-simulation-weeks-ago-cannot-now/101376 "2026-10-06T13:19:27Z")
As in the screenshot, I have run several electromagnetics simulation runs before, but now it’s disabled for some reason. My account is still listed in the dashboard as academic plan, and my core hours are only at 2 ho… --- ## [Compressible flow in a orifice and then a duct](https://www.simscale.com/forum/t/compressible-flow-in-a-orifice-and-then-a-duct/101375)
**Author:** [@marcocortecchia](https://www.simscale.com/forum/u/marcocortecchia)\ **Replies:** 0\ **Last updated:** [October 4, 2026, 11:48am UTC](https://www.simscale.com/forum/t/compressible-flow-in-a-orifice-and-then-a-duct/101375 "2026-10-04T11:48:45Z")
https://www.simscale.com/workbench/?pid=395362524848180639&location=simulation:1abe69f8-2aae-4ad2-87d5-047cf36eb646&ps=analysis%2FboundaryConditions%2F0 This is the project I’m working on. The issue is: Maximum number o… --- ## [How should I extract hydrodynamic drag and spray metrics from a transient VOF seaplane hull simulation?](https://www.simscale.com/forum/t/how-should-i-extract-hydrodynamic-drag-and-spray-metrics-from-a-transient-vof-seaplane-hull-simulation/101374)
**Author:** [@PriyanshuKACL](https://www.simscale.com/forum/u/PriyanshuKACL)\ **Replies:** 0\ **Last updated:** [October 3, 2026, 7:17pm UTC](https://www.simscale.com/forum/t/how-should-i-extract-hydrodynamic-drag-and-spray-metrics-from-a-transient-vof-seaplane-hull-simulation/101374 "2026-10-03T19:17:30Z")
https://www.simscale.com/workbench/?pid=3838122314020395509&rru=82daf175-5a95-4e9c-878c-3420c6b7f871&ci=ce10a913-9f45-49ed-8554-5d7784417e03&mt=SIMULATION\_RESULT&ct=SOLUTION\_FIELD https://www.simscale.com/workbench/?pid… --- ## [Help verifying lift and drag coefficinets setup](https://www.simscale.com/forum/t/help-verifying-lift-and-drag-coefficinets-setup/101369)
**Author:** [@ElenaV](https://www.simscale.com/forum/u/ElenaV)\ **Replies:** 2\ **Last updated:** [October 1, 2026, 10:14am UTC](https://www.simscale.com/forum/t/help-verifying-lift-and-drag-coefficinets-setup/101369 "2026-10-01T10:14:32Z")
Hi, I am simulating a NACA 0012 finite wing in incompressible external aerodynamics and measuring lift/drag coefficients and forces across angles of attack. Here is the link to my project: https://www.simscale.com/workb… --- ## [Trouble completing the FEA simulation due to some connector issue](https://www.simscale.com/forum/t/trouble-completing-the-fea-simulation-due-to-some-connector-issue/101362)
**Author:** [@Mithesha](https://www.simscale.com/forum/u/Mithesha)\ **Replies:** 1\ **Last updated:** [September 30, 2026, 1:56pm UTC](https://www.simscale.com/forum/t/trouble-completing-the-fea-simulation-due-to-some-connector-issue/101362 "2026-09-30T13:56:31Z")
I have been trying to run FEA simulation on an active aero wing design of a car. I have directly imported the CAD from Onshape. I know that its slightly poor but I have no other option but to use the same design. Whenev… --- ## [3D mouse support](https://www.simscale.com/forum/t/3d-mouse-support/101363)
**Author:** [@sean\_grant](https://www.simscale.com/forum/u/sean_grant)\ **Replies:** 0\ **Last updated:** [September 25, 2026, 11:31pm UTC](https://www.simscale.com/forum/t/3d-mouse-support/101363 "2026-09-25T23:31:26Z")
3D mouse support (3D Connexion) is currently only partially available, it works in simulation setup but not in the results area. Would be great if that was added --- ## [Issue creating simulation](https://www.simscale.com/forum/t/issue-creating-simulation/101239)
**Author:** [@rommel\_exe](https://www.simscale.com/forum/u/rommel_exe)\ **Replies:** 2\ **Last updated:** [September 24, 2026, 6:59pm UTC](https://www.simscale.com/forum/t/issue-creating-simulation/101239 "2026-09-24T18:59:37Z")
Hi guys, I am trying to run an incompressible simulation on this CAD model: SimScale Login However, each and every time I encounter a different issue. I am new to Simscale so I was wondering if someone could guide me t… --- ## [Mesh failing](https://www.simscale.com/forum/t/mesh-failing/101220)
**Author:** [@abengani](https://www.simscale.com/forum/u/abengani)\ **Replies:** 4\ **Last updated:** [September 24, 2026, 6:48pm UTC](https://www.simscale.com/forum/t/mesh-failing/101220 "2026-09-24T18:48:00Z")
Hi, we are designing a stem racing car however our mesh has started failing for our recent designs. --- ## [Tesla Micromixer CFD simulation troubleshooting - incorrect results and distribution](https://www.simscale.com/forum/t/tesla-micromixer-cfd-simulation-troubleshooting-incorrect-results-and-distribution/101218)
**Author:** [@Karakat](https://www.simscale.com/forum/u/Karakat)\ **Replies:** 3\ **Last updated:** [September 24, 2026, 6:45pm UTC](https://www.simscale.com/forum/t/tesla-micromixer-cfd-simulation-troubleshooting-incorrect-results-and-distribution/101218 "2026-09-24T18:45:53Z")
Hello, I am working on a Tesla Micromixer simulation using the Incompressible CFD solver. I have set up everything, but the simulation results in Run 2 look completely incorrect. The contour plots for the Passive Scala… --- ## [external flow selection](https://www.simscale.com/forum/t/external-flow-selection/101233)
**Author:** [@hamdi\_zaherali](https://www.simscale.com/forum/u/hamdi_zaherali)\ **Replies:** 2\ **Last updated:** [September 24, 2026, 6:42pm UTC](https://www.simscale.com/forum/t/external-flow-selection/101233 "2026-09-24T18:42:22Z")
why i can not select the “add geometry operation” when i want to create external flow for my airfoil ? --- ## [Irregularly High CD. What went wrong?](https://www.simscale.com/forum/t/irregularly-high-cd-what-went-wrong/101190)
**Author:** [@nfelice](https://www.simscale.com/forum/u/nfelice)\ **Replies:** 2\ **Last updated:** [September 24, 2026, 6:39pm UTC](https://www.simscale.com/forum/t/irregularly-high-cd-what-went-wrong/101190 "2026-09-24T18:39:34Z")
Hi everyone, I’m working on CFD simulations for STEM Racing CO₂-powered cars and consistently getting an unusually high drag coefficient. Similar STEM Racing models from other teams typically produce a Cd of around 0.3… --- ## [Getting Too High of a Force in Air Flow Simulation](https://www.simscale.com/forum/t/getting-too-high-of-a-force-in-air-flow-simulation/101352)
**Author:** [@Deltaco](https://www.simscale.com/forum/u/Deltaco)\ **Replies:** 2\ **Last updated:** [September 24, 2026, 6:33pm UTC](https://www.simscale.com/forum/t/getting-too-high-of-a-force-in-air-flow-simulation/101352 "2026-09-24T18:33:40Z")
I have a Hollow Rocket Nose and I input 20m/s in the -y direction directly on top of the nose. I input a forces and moment value on the flow surface of the Rocket Nose. I ran the simulation, my solution fields looked cor… --- ## [Struggling with Meshing on a Complex Geometry](https://www.simscale.com/forum/t/struggling-with-meshing-on-a-complex-geometry/101185)
**Author:** [@pwolf3848](https://www.simscale.com/forum/u/pwolf3848)\ **Replies:** 2\ **Last updated:** [September 24, 2026, 6:31pm UTC](https://www.simscale.com/forum/t/struggling-with-meshing-on-a-complex-geometry/101185 "2026-09-24T18:31:40Z")
Hi everyone, I’m working on a simulation for a new heat sink design and am running into meshing issues. The geometry is fairly complex with many small fins, and the mesh keeps failing near the edges. Here is a link to … --- ## [Struggling with Solid Body Material Assignment vs. Flow Domain Isolation in Data Center Simulation](https://www.simscale.com/forum/t/struggling-with-solid-body-material-assignment-vs-flow-domain-isolation-in-data-center-simulation/101163)
**Author:** [@souhail\_achand](https://www.simscale.com/forum/u/souhail_achand)\ **Replies:** 2\ **Last updated:** [September 24, 2026, 6:27pm UTC](https://www.simscale.com/forum/t/struggling-with-solid-body-material-assignment-vs-flow-domain-isolation-in-data-center-simulation/101163 "2026-09-24T18:27:24Z")
Hi everyone, I am working on a Data Center simulation (Conjugate Heat Transfer - CHT) using SimScale, and I am facing a recurring error related to material assignment and solid bodies. I would appreciate some guidance o… --- ## [Transient Magnetic-Thermal Simulation duration](https://www.simscale.com/forum/t/transient-magnetic-thermal-simulation-duration/101320)
**Author:** [@azizelmajid](https://www.simscale.com/forum/u/azizelmajid)\ **Replies:** 3\ **Last updated:** [September 24, 2026, 6:24pm UTC](https://www.simscale.com/forum/t/transient-magnetic-thermal-simulation-duration/101320 "2026-09-24T18:24:02Z")
Hello, I am currently working on an electromagnetic simulation using a transient magnetic analysis with thermal coupling. I am trying to obtain simulation results for a total simulated time of 60–300 seconds, using a ti… --- ## [Innacurate CFD results after changing the angle of attack](https://www.simscale.com/forum/t/innacurate-cfd-results-after-changing-the-angle-of-attack/101328)
**Author:** [@Zhiheng1203](https://www.simscale.com/forum/u/Zhiheng1203)\ **Replies:** 1\ **Last updated:** [September 24, 2026, 6:13pm UTC](https://www.simscale.com/forum/t/innacurate-cfd-results-after-changing-the-angle-of-attack/101328 "2026-09-24T18:13:29Z")
Hello everyone, I recreated the NACA0008 profile based on a dataset from UIUC and the result has a 0.2% error with the theoretical value from Vergas et al. (photo 1), when it is under an aoa of 0 degree, and Re of 2000. … --- ## [Touching edges fault won't heal on large structural face — need repair guidance](https://www.simscale.com/forum/t/touching-edges-fault-wont-heal-on-large-structural-face-need-repair-guidance/101324)
**Author:** [@aindri](https://www.simscale.com/forum/u/aindri)\ **Replies:** 1\ **Last updated:** [September 23, 2026, 3:42pm UTC](https://www.simscale.com/forum/t/touching-edges-fault-wont-heal-on-large-structural-face-need-repair-guidance/101324 "2026-09-23T15:42:56Z")
I’m running a CFD research project studying F1 aerodynamics — specifically how S-Duct front-chassis geometry affects front-axle downforce loss when a car follows another through turbulent wake. This requires 6 simulation… --- ## [SimScale Support Report — AMI Transient Simulation Cost/Convergence Issue](https://www.simscale.com/forum/t/simscale-support-report-ami-transient-simulation-cost-convergence-issue/101323)
**Author:** [@vyasved1012](https://www.simscale.com/forum/u/vyasved1012)\ **Replies:** 1\ **Last updated:** [September 23, 2026, 3:35pm UTC](https://www.simscale.com/forum/t/simscale-support-report-ami-transient-simulation-cost-convergence-issue/101323 "2026-09-23T15:35:10Z")
SimScale Support Report — AMI Transient Simulation Cost/Convergence Issue Project: curved fin big pt2 (“omni wheel”) Simulation: AMI (sliding mesh) — transient run following a validated MRF steady-state sanity check Plan… --- ## [Force and Moment Coefficients Results Item does not recognize a unit vector for 3 degrees](https://www.simscale.com/forum/t/force-and-moment-coefficients-results-item-does-not-recognize-a-unit-vector-for-3-degrees/97903)
**Author:** [@DaleKramer](https://www.simscale.com/forum/u/DaleKramer)\ **Replies:** 4\ **Last updated:** [September 18, 2026, 11:56am UTC](https://www.simscale.com/forum/t/force-and-moment-coefficients-results-item-does-not-recognize-a-unit-vector-for-3-degrees/97903 "2026-09-18T11:56:48Z")
It looks to me that due to input data precision errors, I am no longer able to enter a unit vector for 3 degrees (and likely almost any other discrete angular vector value) in the Forces and Moment Coefficient Result Ite… [Next page](https://www.simscale.com/forum/latest.md?page=1)