# Latest **URL:** https://precice.discourse.group/latest.md [Latest](https://precice.discourse.group/latest.md) · [Categories](https://precice.discourse.group/categories.md) · [Tags](https://precice.discourse.group/tags.md) --- ## [Welcome to the preCICE Forum on Discourse](https://precice.discourse.group/t/welcome-to-the-precice-forum-on-discourse/7)
**Author:** [@system](https://precice.discourse.group/u/system)\ **Replies:** 0\ **Last updated:** [September 16, 2019, 4:30am UTC](https://precice.discourse.group/t/welcome-to-the-precice-forum-on-discourse/7 "2019-09-16T04:30:14Z")
What is preCICE? preCICE is a coupling library for partitioned multi-physics simulations, such as fluid-structure interaction or conjugate heat transfer simulations. preCICE couples existing programs capable of simulatin… --- ## [SU2 adapter segment fault](https://precice.discourse.group/t/su2-adapter-segment-fault/2939)
**Author:** [@Perin](https://precice.discourse.group/u/Perin)\ **Replies:** 2\ **Last updated:** [September 21, 2026, 1:04pm UTC](https://precice.discourse.group/t/su2-adapter-segment-fault/2939 "2026-09-21T13:04:55Z")
Hey everybody I compiled modified su2 together with precice and it still works fine with single-domain simulations. However, when i start to run precice FSI tutorials in fluid-su2 folder, it corrupts as follows: … --- ## [First preCICE online training (Americas), October 5-9, 2026](https://precice.discourse.group/t/first-precice-online-training-americas-october-5-9-2026/2861)
**Author:** [@uekerman](https://precice.discourse.group/u/uekerman)\ **Replies:** 2\ **Last updated:** [September 21, 2026, 7:54am UTC](https://precice.discourse.group/t/first-precice-online-training-americas-october-5-9-2026/2861 "2026-09-21T07:54:05Z")
Registration closes on Friday, Sep 25. In October 5-9, 2026, we are organizing the first online preCICE training, mainly targeting participants in the US, Canada, and Latin America (time: 12–3 pm EDT (UTC-4)) that canno… --- ## [Eigen3Config.cmake not found when building preCICE v3.3.0 or later from source](https://precice.discourse.group/t/eigen3config-cmake-not-found-when-building-precice-v3-3-0-or-later-from-source/3003)
**Author:** [@HiroakiAmakawa](https://precice.discourse.group/u/HiroakiAmakawa)\ **Replies:** 2\ **Last updated:** [September 18, 2026, 2:39am UTC](https://precice.discourse.group/t/eigen3config-cmake-not-found-when-building-precice-v3-3-0-or-later-from-source/3003 "2026-09-18T02:39:20Z")
Hello, I have a question regarding building preCICE from source. Following the instructions on the preCICE installation page, I prepared all required dependencies such as Eigen and Boost: When running CMake to build… --- ## [Quickstart tutorial hangs silently at startup (no error) — root cause: hwloc's GPU/X11 probe blocks inside MPI\_Init](https://precice.discourse.group/t/quickstart-tutorial-hangs-silently-at-startup-no-error-root-cause-hwlocs-gpu-x11-probe-blocks-inside-mpi-init/2999)
**Author:** [@Extraweich](https://precice.discourse.group/u/Extraweich)\ **Replies:** 1\ **Last updated:** [September 16, 2026, 7:41am UTC](https://precice.discourse.group/t/quickstart-tutorial-hangs-silently-at-startup-no-error-root-cause-hwlocs-gpu-x11-probe-blocks-inside-mpi-init/2999 "2026-09-16T07:41:28Z")
TL;DR Running the quickstart tutorial (OpenFOAM adapter + solid-cpp) on a regular desktop/laptop, both participants can hang forever right at startup, before any preCICE coupling code runs, with no error message at all.… --- ## [Staggered timesteps with 3 participant coupling](https://precice.discourse.group/t/staggered-timesteps-with-3-participant-coupling/2998)
**Author:** [@pm996](https://precice.discourse.group/u/pm996)\ **Replies:** 1\ **Last updated:** [September 16, 2026, 7:33am UTC](https://precice.discourse.group/t/staggered-timesteps-with-3-participant-coupling/2998 "2026-09-16T07:33:14Z")
Hello, I’m trying to implement a 3-participant solver system. The order of execution in one timestep is as follows. Solver C sends data to Solver A. Solver A performs some calculations and sends data to Solver B Solve… --- ## [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… --- ## [Map 2D axisymmetric to 3D](https://precice.discourse.group/t/map-2d-axisymmetric-to-3d/2997)
**Author:** [@exkroy](https://precice.discourse.group/u/exkroy)\ **Replies:** 2\ **Last updated:** [August 24, 2026, 10:21am UTC](https://precice.discourse.group/t/map-2d-axisymmetric-to-3d/2997 "2026-08-24T10:21:12Z")
Hello, my setup is as follows: Both simulations are currently 2D axisymmetric (OpenFOAM and solids4foam respectively). Temperatures and heat transfer coefficients are exchanged. Now I would like to simulate the soli… --- ## [D-FlowFM + preC-SUMO coupling: serial explicit coupling with changing FM 3D mesh (resetMesh) possible?](https://precice.discourse.group/t/d-flowfm-prec-sumo-coupling-serial-explicit-coupling-with-changing-fm-3d-mesh-resetmesh-possible/2994)
**Author:** [@Aabhas](https://precice.discourse.group/u/Aabhas)\ **Replies:** 1\ **Last updated:** [August 17, 2026, 11:12am UTC](https://precice.discourse.group/t/d-flowfm-prec-sumo-coupling-serial-explicit-coupling-with-changing-fm-3d-mesh-resetmesh-possible/2994 "2026-08-17T11:12:21Z")
Hi preCICE community, We are building a coupled workflow between: A far-field hydrodynamic model (FM) A near-field plume model (preC-SUMO) We want to check whether our intended coupling approach is compatible with pr… --- ## [OpenFOAM function object crashes at the end of the simulation due to setting deltaT to zero](https://precice.discourse.group/t/openfoam-function-object-crashes-at-the-end-of-the-simulation-due-to-setting-deltat-to-zero/2957)
**Author:** [@marhatom](https://precice.discourse.group/u/marhatom)\ **Replies:** 4\ **Last updated:** [August 17, 2026, 10:45am UTC](https://precice.discourse.group/t/openfoam-function-object-crashes-at-the-end-of-the-simulation-due-to-setting-deltat-to-zero/2957 "2026-08-17T10:45:58Z")
Hello I am using OpenFOAM-adapter-v1.3.1. I think there is an issue with the adapter at the end of the OpenFOAM simulation when the simulation (coupling) finishes and the function objects get triggered one last time. -… --- ## [Isolating SLURM issues with multi-node preCICE runs](https://precice.discourse.group/t/isolating-slurm-issues-with-multi-node-precice-runs/2995)
**Author:** [@valentinaschueller](https://precice.discourse.group/u/valentinaschueller)\ **Replies:** 0\ **Last updated:** [August 17, 2026, 7:18am UTC](https://precice.discourse.group/t/isolating-slurm-issues-with-multi-node-precice-runs/2995 "2026-08-17T07:18:48Z")
This is just to document an issue I had when running preCICE on a cluster, and how I isolated and resolved it. The issue had nothing to do with preCICE, but with the way SLURM was set up. However, this took some time to… --- ## [Is it possible to couple OpenFOAM with High-Order-Spectral method base on preCICE?](https://precice.discourse.group/t/is-it-possible-to-couple-openfoam-with-high-order-spectral-method-base-on-precice/2411)
**Author:** [@yuanz](https://precice.discourse.group/u/yuanz)\ **Replies:** 13\ **Last updated:** [July 30, 2026, 10:45am UTC](https://precice.discourse.group/t/is-it-possible-to-couple-openfoam-with-high-order-spectral-method-base-on-precice/2411 "2026-07-30T10:45:31Z")
I’m working on the coupled method between OpenFOAM and High-Order-Spectral method. I used the open source software HOS-Ocean (GitHub - LHEEA/HOS-ocean: This project has migrated to GitLab: https://gitlab.com/lheea/HOS-Oc… --- ## [Error while running solver dummy on a server](https://precice.discourse.group/t/error-while-running-solver-dummy-on-a-server/2961)
**Author:** [@Manish](https://precice.discourse.group/u/Manish)\ **Replies:** 8\ **Last updated:** [July 30, 2026, 10:33am UTC](https://precice.discourse.group/t/error-while-running-solver-dummy-on-a-server/2961 "2026-07-30T10:33:00Z")
Dear preCICE team I installed preCICE on my local client to couple solver dummy with a different CFD solver. After going through the entire process the two solvers were successfully coupled. However, now I am trying to … --- ## [Error while coupling Atmospheric Boundarly Solver PALM with an In-house CFD solver](https://precice.discourse.group/t/error-while-coupling-atmospheric-boundarly-solver-palm-with-an-in-house-cfd-solver/2991)
**Author:** [@Manish](https://precice.discourse.group/u/Manish)\ **Replies:** 1\ **Last updated:** [July 29, 2026, 8:45am UTC](https://precice.discourse.group/t/error-while-coupling-atmospheric-boundarly-solver-palm-with-an-in-house-cfd-solver/2991 "2026-07-29T08:45:11Z")
precice-config.xml (2.1 KB) FLOWer\_Log.txt (1.4 KB) debug1.log (150.4 KB) PALM\_log.txt (9.2 KB) Dear preCICE team I am trying to couple an incompressible Atmospheric Fluid Solver called PALM, with an In-house FORTRA… --- ## [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… --- ## [Coupling GENE-X simulaition with Paraview/Catalyst visualization](https://precice.discourse.group/t/coupling-gene-x-simulaition-with-paraview-catalyst-visualization/2946)
**Author:** [@Yi\_Ju](https://precice.discourse.group/u/Yi_Ju)\ **Replies:** 1\ **Last updated:** [July 19, 2026, 8:43am UTC](https://precice.discourse.group/t/coupling-gene-x-simulaition-with-paraview-catalyst-visualization/2946 "2026-07-19T08:43:11Z")
We are using preCICE to couple GENE-X simulation with Paraview/Catalyst visualization. In one case, we use preCICE to communicate around 32k points, and we ran into out of memory. We also use slurm with CPU pinning, our … --- ## [Mapping issues about FSI with OpenFOAM and Calculix](https://precice.discourse.group/t/mapping-issues-about-fsi-with-openfoam-and-calculix/2959)
**Author:** [@xiaodong\_wu](https://precice.discourse.group/u/xiaodong_wu)\ **Replies:** 1\ **Last updated:** [July 19, 2026, 8:32am UTC](https://precice.discourse.group/t/mapping-issues-about-fsi-with-openfoam-and-calculix/2959 "2026-07-19T08:32:13Z")
I’m a beginner in fluid-structure interaction, and I’m currently trying to couple OpenFOAM and CalculiX for a cylinder flow-induced vibration test. I’m using an unstructured mesh in the fluid domain, with 744 faces at th… --- ## [Data mapping with MPI and duplicated vertices](https://precice.discourse.group/t/data-mapping-with-mpi-and-duplicated-vertices/2969)
**Author:** [@friva](https://precice.discourse.group/u/friva)\ **Replies:** 3\ **Last updated:** [July 15, 2026, 2:49pm UTC](https://precice.discourse.group/t/data-mapping-with-mpi-and-duplicated-vertices/2969 "2026-07-15T14:49:16Z")
Hi, I’m working on developing a preCICE adapter for coupling two different parallel fluid codes in 3D. I’m using fortran with MPI for domain decomposition. I’d like to use the linear-cell-interpolation mapping method of … --- ## [Does OpenFOAM adapter support Lagrangian particle checkpointing?](https://precice.discourse.group/t/does-openfoam-adapter-support-lagrangian-particle-checkpointing/2947)
**Author:** [@Mike\_Tree](https://precice.discourse.group/u/Mike_Tree)\ **Replies:** 12\ **Last updated:** [June 13, 2026, 4:57pm UTC](https://precice.discourse.group/t/does-openfoam-adapter-support-lagrangian-particle-checkpointing/2947 "2026-06-13T16:57:29Z")
I’m currently using preCICE to couple an in-house compressible flow code that doesn’t currently support Lagrangian particles with a custom OpenFOAM solver that essentially ONLY solves Lagrangian particles. The in-house c… --- ## [The preCICE Newsletter (archive)](https://precice.discourse.group/t/the-precice-newsletter-archive/2868)
**Author:** [@Makis](https://precice.discourse.group/u/Makis)\ **Replies:** 2\ **Last updated:** [June 12, 2026, 2:36pm UTC](https://precice.discourse.group/t/the-precice-newsletter-archive/2868 "2026-06-12T14:36:33Z")
Earlier this year, we started a quarterly Newsletter, highlighting the most important updates in the preCICE universe, including: New publications New features New adapters, bindings, tools, tutorials, and more Upcomin… --- ## [preCICE at ECCOMAS WCCM 2026 (Munich, Germany)](https://precice.discourse.group/t/precice-at-eccomas-wccm-2026-munich-germany/2678)
**Author:** [@Makis](https://precice.discourse.group/u/Makis)\ **Replies:** 2\ **Last updated:** [June 10, 2026, 1:52pm UTC](https://precice.discourse.group/t/precice-at-eccomas-wccm-2026-munich-germany/2678 "2026-06-10T13:52:01Z")
Besides the preCICE Workshops (with the next one expected in March 2027), we regularly organize preCICE sessions in larger conferences. The WCCM 2026 conference will take place in Munich, Germany, between July 19-24: A … --- ## [Preserving Stokes theorem, or equivalently, "scaled-consistent-line"](https://precice.discourse.group/t/preserving-stokes-theorem-or-equivalently-scaled-consistent-line/2941)
**Author:** [@friva](https://precice.discourse.group/u/friva)\ **Replies:** 1\ **Last updated:** [May 22, 2026, 6:47am UTC](https://precice.discourse.group/t/preserving-stokes-theorem-or-equivalently-scaled-consistent-line/2941 "2026-05-22T06:47:46Z")
Hi everyone, I am a new preCICE user, and I recently obtained funding to explore coupling two large 3D MHD codes that we use to simulate solar and stellar atmospheres. I would appreciate some advice on how to set up the… --- ## [Checkpoint/reload for a steady-state CFD solver in implicit coupling](https://precice.discourse.group/t/checkpoint-reload-for-a-steady-state-cfd-solver-in-implicit-coupling/2940)
**Author:** [@hywoo](https://precice.discourse.group/u/hywoo)\ **Replies:** 0\ **Last updated:** [May 17, 2026, 6:15pm UTC](https://precice.discourse.group/t/checkpoint-reload-for-a-steady-state-cfd-solver-in-implicit-coupling/2940 "2026-05-17T18:15:53Z")
Hello preCICE community, I am coupling a steady-state CFD solver with a transient material response solver using preCICE. The material solver advances in physical time, while the CFD solver is used to obtain a steady-s… --- ## [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… --- ## [preCICE- finalize MPI issue in last synchronization window](https://precice.discourse.group/t/precice-finalize-mpi-issue-in-last-synchronization-window/2909)
**Author:** [@cysanghavi](https://precice.discourse.group/u/cysanghavi)\ **Replies:** 8\ **Last updated:** [April 23, 2026, 11:34am UTC](https://precice.discourse.group/t/precice-finalize-mpi-issue-in-last-synchronization-window/2909 "2026-04-23T11:34:34Z")
I’m relatively new to preCICE and the community, and I’d like to ask for advice on an internal coupling setup using our in-house solver MESHFREE (written in Fortran). Both coupled participants use MESHFREE, and I’m doin… --- ## [GSOC 2026 - Nishant Singh](https://precice.discourse.group/t/gsoc-2026-nishant-singh/2799)
**Author:** [@NishantSinghhhhh](https://precice.discourse.group/u/NishantSinghhhhh)\ **Replies:** 6\ **Last updated:** [April 23, 2026, 11:21am UTC](https://precice.discourse.group/t/gsoc-2026-nishant-singh/2799 "2026-04-23T11:21:54Z")
Hi preCICE community! :waving\_hand: My name is Nishant Singh. I currently serve as the Google Developer Group Lead at AIT Pune, and I am reaching out because I am highly interested in contributing to preCICE and targeti… [Next page](https://precice.discourse.group/latest.md?page=1)