Simvia at the 5th Automotive CFD Prediction Workshop (AutoCFD5)

AutoCFD brings the automotive CFD community together around shared test cases and a comparison of predictions. Geometry, boundary conditions and computational grids are prescribed, so that the predictive capability of CFD codes on road-car geometries can be assessed objectively and turned into practical guidance on turbulence modelling, meshing and numerical schemes.

The 5th edition takes place on October 8 and 9, 2026 at DAMA Technopole in Bologna, Italy. On October 8 at 2:25 PM, our team will present how the open-source code code_saturne performs on the workshop cases, from steady RANS to hybrid RANS-LES. If you work on aerodynamics, it's a direct way to see how an open-source solver holds up on these cases.

• A common test bench: all participants work on the same geometries, conditions and grids, making comparisons between codes and methods directly meaningful.
• Practical guidance on best practice: turbulence modelling, meshing, numerical schemes, scale-resolving simulations, HPC and AI/ML.
• An established community: after Oxford (2019), Berlin (2021), Barcelona (2022) and Belfast (2024), the workshop brings together researchers and engineers from industry and academia, including car manufacturers.
• Evaluate an open-source alternative: our talk shows what code_saturne can achieve on these cases alongside the other solvers represented.

October 8, 2:25 PM – Assessment of the open-source CFD code code_saturne on the AutoCFD workshop cases: from steady RANS to hybrid RANS-LES "Scale Resolving Simulation" session

• The results obtained with code_saturne on the workshop's reference configurations
• The progression of approaches, from steady RANS to hybrid RANS-LES simulations
• How an open-source solver compares with the other codes assessed