Code_Saturne

At a glance

• Editor score
  7.9 / 10
• Pricing
  Free plan
• Best for
  Linux teams needing free multiphysics CFD
• Free plan
  Yes
• Paid from
  Free
• Deployment
  Desktop
• Facts checked
  24 Sep 2026

• Where it wins

  • Covers RANS, LES, combustion, radiation, atmospheric flow and MHD.
  • Supports MPI parallelism, with optional OpenMP.
  • Includes mesh preprocessing and coupling interfaces for SYRTHES and code_aster.

• Where it doesn't

  • Targets Linux/POSIX rather than native Windows builds.
  • Self-hosted deployment requires teams to manage their own environment.
  • Support is through documentation and the community.

Our verdict on Code_Saturne

Code_Saturne is an open-source computational fluid dynamics solver developed primarily by EDF R&D, aimed at engineering and research teams working on flow simulations. Its co-located finite-volume method handles unstructured meshes and supports incompressible, weakly compressible, turbulent, thermal and multiphysics flows. The scope extends beyond general flow analysis to combustion, radiation, atmospheric flow, magnetohydrodynamics, electric arcs and particle tracking, making it relevant to teams whose simulation work spans several physical effects.

The solver’s breadth is a central strength. RANS and LES turbulence models sit alongside specialized modules, including Lagrangian particle tracking with deposition and impact models. A mesh preprocessor supports MED, CGNS and other formats; a graphical interface, study manager and batch submission commands provide multiple ways to manage studies. MPI distributed-memory parallelism and optional OpenMP support parallel workloads. Coupling interfaces for SYRTHES and code_aster give teams a route to connect related simulation tools, though the product’s listed integrations are focused rather than a broad general-purpose software ecosystem.

Code_Saturne is distributed under the GPL and is free to use; it is self-hosted and targets Linux/POSIX systems. Current installation documentation no longer provides native Windows builds, so teams requiring a native Windows solver should look elsewhere. Documentation and community support are the stated support channels, making this a better fit for organizations able to work with technical documentation and manage their own installation than for buyers seeking a vendor-operated service. Choose Code_Saturne for free, technically broad CFD on Linux; consider an alternative if your platform requirements or support expectations do not match that model.

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Code_Saturne pricing

Code_Saturne fact sheet

Code_Saturne integrations

Code_Saturne lists 2 integrations on its own site.

• SYRTHES
• code_aster

Alternatives to Code_Saturne

• AFAnsys FluentA broad engineering CFD suite with automated meshing, GPU/HPC solving, and Ansys integrations.9.3
• SimScaleBrowser-based CFD with CAD preparation, cloud computing, APIs, and a free entry plan.9.1
• COMSOL MultiphysicsCFD modeling in a desktop environment built for coupled physics and broader engineering simulation.9.0

See all Code_Saturne alternatives →

Featured on iTechGuides

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update