# \#fsi **URL:** https://precice.discourse.group/tag/fsi/15.md [Latest](https://precice.discourse.group/latest.md) · [Categories](https://precice.discourse.group/categories.md) · [Tags](https://precice.discourse.group/tags.md) --- ## [Breaking-dam-2d crashes when using \*MODAL DYNAMIC in CalculiX](https://precice.discourse.group/t/breaking-dam-2d-crashes-when-using-modal-dynamic-in-calculix/3005)
**Author:** [@Bianca\_Gritti](https://precice.discourse.group/u/Bianca_Gritti)\ **Replies:** 2\ **Last updated:** [September 29, 2026, 10:30am UTC](https://precice.discourse.group/t/breaking-dam-2d-crashes-when-using-modal-dynamic-in-calculix/3005 "2026-09-29T10:30:05Z")
Hi everybody, I’ve recently started working on modal superposition in an FSI setting, so I tried switching CalculiX in the breaking-dam-2d tutorial (OpenFOAM + CalculiX) from direct time integration to modal dynamics. T… --- ## [Coupling openfoam of rhoPimpleFoam with calculix](https://precice.discourse.group/t/coupling-openfoam-of-rhopimplefoam-with-calculix/2227)
**Author:** [@hkchm](https://precice.discourse.group/u/hkchm)\ **Replies:** 6\ **Last updated:** [September 14, 2026, 2:56pm UTC](https://precice.discourse.group/t/coupling-openfoam-of-rhopimplefoam-with-calculix/2227 "2026-09-14T14:56:35Z")
Hi everyone, I am new to precice , and I what to use the precice to do FSI. My coupling situation is flow pass by naca0012 using rhoPimpleFoam for fluid ,and solid using calculix. Here is the error from rhopimplefoam: -… --- ## [Compressible OpenFOAM FSI tutorial](https://precice.discourse.group/t/compressible-openfoam-fsi-tutorial/2935)
**Author:** [@hconel](https://precice.discourse.group/u/hconel)\ **Replies:** 2\ **Last updated:** [September 14, 2026, 2:55pm UTC](https://precice.discourse.group/t/compressible-openfoam-fsi-tutorial/2935 "2026-09-14T14:55:35Z")
Hi, it is mentioned in several documents that preCICE works with OpenFOAM’s both incompressible and compressible solvers. This sounds reasonable in theory since the only difference is in the force calculation and variabl… --- ## [OpenFOAM to Abaqus mapping](https://precice.discourse.group/t/openfoam-to-abaqus-mapping/2992)
**Author:** [@buyi13](https://precice.discourse.group/u/buyi13)\ **Replies:** 3\ **Last updated:** [August 26, 2026, 8:40am UTC](https://precice.discourse.group/t/openfoam-to-abaqus-mapping/2992 "2026-08-26T08:40:30Z")
Hey everyone, I am setting up an FSI simulation between OpenFOAM and Abaqus. In the future I will have the setup running on a Linux based HPC. For now, I am running OpenFOAM and preCICE on WSL and Abaqus on Windows. As… --- ## [Fin flutter simulation displacement problem](https://precice.discourse.group/t/fin-flutter-simulation-displacement-problem/289)
**Author:** [@kynnx](https://precice.discourse.group/u/kynnx)\ **Replies:** 11\ **Last updated:** [July 27, 2026, 8:02am UTC](https://precice.discourse.group/t/fin-flutter-simulation-displacement-problem/289 "2026-07-27T08:02:03Z")
Hi, I am trying to run an FSI simulation (OpenFOAM 7, Calculix 2.16) in order to verify if flutter occurs to my fin. I tried to use both rhoPimpleFoam and rhoCentralFoam but after about 4.5e-5 \[s\] (with timestep 1e-7) Co… --- ## [Compaction of fibres in prepreg composites (FSI coupling with 2 fluids using compressibleInterFoam)](https://precice.discourse.group/t/compaction-of-fibres-in-prepreg-composites-fsi-coupling-with-2-fluids-using-compressibleinterfoam/2970)
**Author:** [@A\_L](https://precice.discourse.group/u/A_L)\ **Replies:** 1\ **Last updated:** [July 20, 2026, 9:29pm UTC](https://precice.discourse.group/t/compaction-of-fibres-in-prepreg-composites-fsi-coupling-with-2-fluids-using-compressibleinterfoam/2970 "2026-07-20T21:29:23Z")
Good morning everyone ! I am working on OpenFOAM with the compressible two-phase solver compressibleInterFoam to simulate voids during prepreg composites manufacturing process at microscale. Currently, I use an RVE with… --- ## [Another post on restarting for FSI simulation (FASTEST/CalculiX/preCICE)](https://precice.discourse.group/t/another-post-on-restarting-for-fsi-simulation-fastest-calculix-precice/2945)
**Author:** [@gdenayer](https://precice.discourse.group/u/gdenayer)\ **Replies:** 11\ **Last updated:** [July 20, 2026, 7:45am UTC](https://precice.discourse.group/t/another-post-on-restarting-for-fsi-simulation-fastest-calculix-precice/2945 "2026-07-20T07:45:33Z")
Dear preCICE community, I have a running FSI simulation using our CFD solver (FASTEST-3D) coupled with the CSD solver CalculiX via preCICE. The coupled simulation is stable and the results look physically reasonable. Si… --- ## [Parallel run with preCICE coupling openFOAM and Calculix](https://precice.discourse.group/t/parallel-run-with-precice-coupling-openfoam-and-calculix/2906)
**Author:** [@yangyangnj](https://precice.discourse.group/u/yangyangnj)\ **Replies:** 21\ **Last updated:** [May 4, 2026, 3:26am UTC](https://precice.discourse.group/t/parallel-run-with-precice-coupling-openfoam-and-calculix/2906 "2026-05-04T03:26:01Z")
Is there a tutorial dedicated to running FSI with preCICE using MPI? I couldn’t find it on the web. Currently, my model works with 1 cpu for openFOAM and calculix. But the preCICE: Mapping takes longer and longer to f… --- ## [How do I resume running the example after it has been interrupted?](https://precice.discourse.group/t/how-do-i-resume-running-the-example-after-it-has-been-interrupted/2930)
**Author:** [@HHao-gihub](https://precice.discourse.group/u/HHao-gihub)\ **Replies:** 1\ **Last updated:** [April 22, 2026, 4:14pm UTC](https://precice.discourse.group/t/how-do-i-resume-running-the-example-after-it-has-been-interrupted/2930 "2026-04-22T16:14:36Z")
I encountered a case interruption due to a power outage while running a coupled OpenFOAM and Calculix simulation. How can I resume the simulation? --- ## [Abnormal deformation of the object mesh](https://precice.discourse.group/t/abnormal-deformation-of-the-object-mesh/2904)
**Author:** [@HHao-gihub](https://precice.discourse.group/u/HHao-gihub)\ **Replies:** 2\ **Last updated:** [April 10, 2026, 2:15pm UTC](https://precice.discourse.group/t/abnormal-deformation-of-the-object-mesh/2904 "2026-04-10T14:15:27Z")
I’m currently using overlapping grids to test a floating object, but only half of it is moving, and I’m seeing the jagged edges shown in the image. How can I fix this? --- ## [Aorta FSI: Displacement grows exponentially after 0.025s & pressure Poisson equation gets NaN](https://precice.discourse.group/t/aorta-fsi-displacement-grows-exponentially-after-0-025s-pressure-poisson-equation-gets-nan/2846)
**Author:** [@odoyey](https://precice.discourse.group/u/odoyey)\ **Replies:** 4\ **Last updated:** [March 26, 2026, 3:24pm UTC](https://precice.discourse.group/t/aorta-fsi-displacement-grows-exponentially-after-0-025s-pressure-poisson-equation-gets-nan/2846 "2026-03-26T15:24:03Z")
Hello everyone, I am a new preCICE user with about 3 months of experience. I am performing a fluid-structure interaction simulation of the human aorta using OpenFOAM, preCICE, and CalculiX. Problem description As shown… --- ## [Prescribed Rotation AMI in OpenFOAM and Prescribed Rotation in Calculix](https://precice.discourse.group/t/prescribed-rotation-ami-in-openfoam-and-prescribed-rotation-in-calculix/2774)
**Author:** [@Hydronautica](https://precice.discourse.group/u/Hydronautica)\ **Replies:** 0\ **Last updated:** [February 26, 2026, 4:14pm UTC](https://precice.discourse.group/t/prescribed-rotation-ami-in-openfoam-and-prescribed-rotation-in-calculix/2774 "2026-02-26T16:14:38Z")
Hello all, I am looking to do some coupled CFD-FEA using openfoam and calculix of a rotating rotor of a turbine. I am thinking of having the CFD rotor spin at a constant rotation rate with an arbitrary mesh interface zo… --- ## [Issues with Calculix-preCICE-InterFoam simulation when running Flap case in parallel](https://precice.discourse.group/t/issues-with-calculix-precice-interfoam-simulation-when-running-flap-case-in-parallel/2720)
**Author:** [@Alejo321](https://precice.discourse.group/u/Alejo321)\ **Replies:** 1\ **Last updated:** [February 9, 2026, 1:55pm UTC](https://precice.discourse.group/t/issues-with-calculix-precice-interfoam-simulation-when-running-flap-case-in-parallel/2720 "2026-02-09T13:55:53Z")
Dears, I was trying to run the flap case with interFoam and Calculix in parallel but it crashes after a while (~ 0.54 sec). If I run the model with only one processor (/fluid-openfoam/./run & /solid-calculix/./run) it … --- ## [Instability after restart in coupled FSI simulation (OpenFOAM / CalculiX / preCICE)](https://precice.discourse.group/t/instability-after-restart-in-coupled-fsi-simulation-openfoam-calculix-precice/2686)
**Author:** [@Arif14](https://precice.discourse.group/u/Arif14)\ **Replies:** 2\ **Last updated:** [January 19, 2026, 9:52pm UTC](https://precice.discourse.group/t/instability-after-restart-in-coupled-fsi-simulation-openfoam-calculix-precice/2686 "2026-01-19T21:52:39Z")
Hello everyone, I am opening this topic because I am struggling to restart my coupled FSI simulation using OpenFOAM and CalculiX. I am aware that restart-related topics have already been discussed and resolved in this f… --- ## [Wave action flexible board](https://precice.discourse.group/t/wave-action-flexible-board/2705)
**Author:** [@lcx](https://precice.discourse.group/u/lcx)\ **Replies:** 0\ **Last updated:** [January 16, 2026, 1:57pm UTC](https://precice.discourse.group/t/wave-action-flexible-board/2705 "2026-01-16T13:57:16Z")
Hello everyone, I have been coupling wave2foam and foam extend to perform fluid structure coupling between flexible plates and waves recently, but I found that only boundary waves can be generated, and the relaxation zon… --- ## [OpenFOAM/CalculiX FSI Simulation Crashes at ~5s - Help Needed!](https://precice.discourse.group/t/openfoam-calculix-fsi-simulation-crashes-at-5s-help-needed/2549)
**Author:** [@wlzr](https://precice.discourse.group/u/wlzr)\ **Replies:** 15\ **Last updated:** [January 16, 2026, 10:33am UTC](https://precice.discourse.group/t/openfoam-calculix-fsi-simulation-crashes-at-5s-help-needed/2549 "2026-01-16T10:33:49Z")
Hello everyone, I’m currently working on a Fluid-Structure Interaction (FSI) simulation coupling OpenFOAM and CalculiX using preCICE. I’m running a relatively simple 2D test case.Unfortunately, I’ve encountered a criti… --- ## [Seeking Advice on Axisymmetric FSI Coupling: OpenFOAM (Wedge) with CalculiX (CAX4)](https://precice.discourse.group/t/seeking-advice-on-axisymmetric-fsi-coupling-openfoam-wedge-with-calculix-cax4/2673)
**Author:** [@Yang](https://precice.discourse.group/u/Yang)\ **Replies:** 1\ **Last updated:** [January 16, 2026, 10:27am UTC](https://precice.discourse.group/t/seeking-advice-on-axisymmetric-fsi-coupling-openfoam-wedge-with-calculix-cax4/2673 "2026-01-16T10:27:07Z")
Hello everyone, I am working on a Fluid-Structure Interaction (FSI) problem using preCICE to couple OpenFOAM and CalculiX. My geometry and boundary conditions are fully axisymmetric, so I’m aiming to use an axisymmetric… --- ## [Has anyone studied pile-soil interaction?](https://precice.discourse.group/t/has-anyone-studied-pile-soil-interaction/2694)
**Author:** [@HHao-gihub](https://precice.discourse.group/u/HHao-gihub)\ **Replies:** 1\ **Last updated:** [January 16, 2026, 10:22am UTC](https://precice.discourse.group/t/has-anyone-studied-pile-soil-interaction/2694 "2026-01-16T10:22:51Z")
I’m using OpenFOAM and Calculix to study pile-soil interaction under wave loading, employing the Waves2Foam wave flume model. Currently, I’m encountering coupling issues where Calculix fails to converge. Are there any si… --- ## [Does preCICE support multiple analysis steps?](https://precice.discourse.group/t/does-precice-support-multiple-analysis-steps/2702)
**Author:** [@HHao-gihub](https://precice.discourse.group/u/HHao-gihub)\ **Replies:** 3\ **Last updated:** [January 14, 2026, 8:54am UTC](https://precice.discourse.group/t/does-precice-support-multiple-analysis-steps/2702 "2026-01-14T08:54:00Z")
I want to perform pile-soil interaction analysis using OpenFOAM and Calculix. Calculix includes a static analysis step and a dynamic analysis step. --- ## [What is “requiresReadingCheckpoint()” or “requiresWritingCheckpoint()”?](https://precice.discourse.group/t/what-is-requiresreadingcheckpoint-or-requireswritingcheckpoint/2698)
**Author:** [@HHao-gihub](https://precice.discourse.group/u/HHao-gihub)\ **Replies:** 3\ **Last updated:** [January 6, 2026, 8:26pm UTC](https://precice.discourse.group/t/what-is-requiresreadingcheckpoint-or-requireswritingcheckpoint/2698 "2026-01-06T20:26:32Z")
I created a test case myself without modifying any code, yet encountered the following error: —\[precise\] ERROR: The required operation \`write-iteration-checkpoint\` is not satisfied. Did you forget to call \`requiresReadin… --- ## [Problem with CalculiX installation](https://precice.discourse.group/t/problem-with-calculix-installation/2691)
**Author:** [@Lucas](https://precice.discourse.group/u/Lucas)\ **Replies:** 3\ **Last updated:** [December 18, 2025, 2:18pm UTC](https://precice.discourse.group/t/problem-with-calculix-installation/2691 "2025-12-18T14:18:19Z")
Hello, I would like to link OpenFOAM to preCICE and CalculiX: My system: Ubuntu 24.04 preCICE - libprecice3\_3.2.0\_noble.deb OpenFOAMv2412 - (build from source) openfoam-adapter - openfoam-adapter-1.3.1 C… --- ## [QR filtering in precice](https://precice.discourse.group/t/qr-filtering-in-precice/2680)
**Author:** [@Abhishek](https://precice.discourse.group/u/Abhishek)\ **Replies:** 5\ **Last updated:** [December 16, 2025, 8:42am UTC](https://precice.discourse.group/t/qr-filtering-in-precice/2680 "2025-12-16T08:42:51Z")
I have trying to simulate FSI using overset mesh in openFoam for fluid and calculiX for solid. Since, the pressure fluctuation and interface force can generate noisy data due to overset; I have seen that the simulation i… --- ## [Coupled OpenFoam+fenics for FSI on 3D](https://precice.discourse.group/t/coupled-openfoam-fenics-for-fsi-on-3d/2687)
**Author:** [@AymenAmiral1997](https://precice.discourse.group/u/AymenAmiral1997)\ **Replies:** 1\ **Last updated:** [December 11, 2025, 7:39pm UTC](https://precice.discourse.group/t/coupled-openfoam-fenics-for-fsi-on-3d/2687 "2025-12-11T19:39:38Z")
Hello, I am currently working on a Fluid-Structure Interaction (FSI) case, using the preCICE adapter to couple FEniCS and OpenFOAM in a 3D simulation. I am interested in modeling a solid with two different Young’s modul… --- ## [Immersed Boundary Method](https://precice.discourse.group/t/immersed-boundary-method/136)
**Author:** [@nikrouz](https://precice.discourse.group/u/nikrouz)\ **Replies:** 7\ **Last updated:** [November 25, 2025, 6:58am UTC](https://precice.discourse.group/t/immersed-boundary-method/136 "2025-11-25T06:58:23Z")
Dear all preCICE users, Is it feasible to write any adapter which can coupled fluid and solid throughout immersed boundary method? For solid, currently CalculiX is ready to use. For fluid solver, we have to use fluid s… --- ## [Multi-structure Fluid-Structure Interaction](https://precice.discourse.group/t/multi-structure-fluid-structure-interaction/2659)
**Author:** [@HHao-gihub](https://precice.discourse.group/u/HHao-gihub)\ **Replies:** 3\ **Last updated:** [November 6, 2025, 8:25am UTC](https://precice.discourse.group/t/multi-structure-fluid-structure-interaction/2659 "2025-11-06T08:25:19Z")
The official Precice example provides a multi-structure fluid-structure interaction coupling between OpenFOAM and Dealii. I want to use Calculix instead of Dealii. How should I proceed? Do I need to run two structural te… --- ## [FSI for rotating Helicopter main rotor blades using OpenFoam v12 and MbDyn](https://precice.discourse.group/t/fsi-for-rotating-helicopter-main-rotor-blades-using-openfoam-v12-and-mbdyn/2649)
**Author:** [@Nipuna\_Perera](https://precice.discourse.group/u/Nipuna_Perera)\ **Replies:** 1\ **Last updated:** [November 2, 2025, 10:18am UTC](https://precice.discourse.group/t/fsi-for-rotating-helicopter-main-rotor-blades-using-openfoam-v12-and-mbdyn/2649 "2025-11-02T10:18:09Z")
Dear preCICE community, I’m trying to conduct FSI for rotating Helicopter main rotor blades. which I’m trying to do is a 3D simulation. Allowing 3DoF and rotating bodies at the same time is not possible in openFoam. The… --- ## [Solids4foam-openfoam FSI coupling: can't use stress as the exchange data](https://precice.discourse.group/t/solids4foam-openfoam-fsi-coupling-cant-use-stress-as-the-exchange-data/2634)
**Author:** [@zyx](https://precice.discourse.group/u/zyx)\ **Replies:** 7\ **Last updated:** [October 31, 2025, 12:47am UTC](https://precice.discourse.group/t/solids4foam-openfoam-fsi-coupling-cant-use-stress-as-the-exchange-data/2634 "2025-10-31T00:47:29Z")
Hello everyone！ I am using solids4foam and OpenFOAM to simulate an FSI problem. I want to use Stress as the exchange date instead of Force. However, solids4foam displayed error messages as： \[31mError (deferred - will ex… --- ## [How to implement a 3D-to-1D mapping？](https://precice.discourse.group/t/how-to-implement-a-3d-to-1d-mapping/2607)
**Author:** [@HHao-gihub](https://precice.discourse.group/u/HHao-gihub)\ **Replies:** 3\ **Last updated:** [October 9, 2025, 5:57am UTC](https://precice.discourse.group/t/how-to-implement-a-3d-to-1d-mapping/2607 "2025-10-09T05:57:17Z")
I plan to perform fluid-structure interaction analysis on a fishing net using OpenFOAM and Calculix. For the net, I will use 1D beam elements B32. Since the fluid domain in OpenFOAM is 3D, what mapping method should I em… --- ## [FSI coupling OpenFOAM (solving 3D fluid) and Calculix (solving 1D structure)](https://precice.discourse.group/t/fsi-coupling-openfoam-solving-3d-fluid-and-calculix-solving-1d-structure/2196)
**Author:** [@zhifan\_D](https://precice.discourse.group/u/zhifan_D)\ **Replies:** 5\ **Last updated:** [October 8, 2025, 8:43am UTC](https://precice.discourse.group/t/fsi-coupling-openfoam-solving-3d-fluid-and-calculix-solving-1d-structure/2196 "2025-10-08T08:43:22Z")
Hello everyone! 1. Model description I am trying to simulate a classic fluid-structure interaction (FSI) problem, specifically the deformation of a flexible cylinder under incoming flow. I’m using OpenFOAM to solve the… --- ## [Fortran Just-in-time data mapping SIGSEGV on finalize](https://precice.discourse.group/t/fortran-just-in-time-data-mapping-sigsegv-on-finalize/2619)
**Author:** [@Justin\_Schoppe](https://precice.discourse.group/u/Justin_Schoppe)\ **Replies:** 1\ **Last updated:** [September 12, 2025, 4:36pm UTC](https://precice.discourse.group/t/fortran-just-in-time-data-mapping-sigsegv-on-finalize/2619 "2025-09-12T16:36:51Z")
Hello, I have recently completed the integration of preCICE with our in house solver and a simple forced oscillator code. It is a simple scheme CFD provides the mesh runs reports its time step and the forced oscillator … [Next page](https://precice.discourse.group/tag/fsi/15.md?match_all_tags=true&page=1&tags%5B%5D=fsi)