Our Product · Cloud CFD on OpenFOAM v2412

Simulate flow, heat and stress in your browser

Go from CAD to converged results in one workspace: geometry, meshing, 48 OpenFOAM solvers, live monitoring and ParaView post-processing. Nothing to install, no licences, and you pay only for the compute you use.

Free plan, no card needed. Built by Navygate Technologies.

What is AnantaSim

Everything between your CAD and a converged result

AnantaSim runs real OpenFOAM v2412 on cloud machines, so all you need is a browser. You set up cases through forms and AnantaSim writes the OpenFOAM dictionaries for you, with the guard rails and tooling that make it fast to use. Every case stays a standard OpenFOAM case, with no proprietary format.

48OpenFOAM solvers
4meshers in one place
19live monitoring functions
14step-by-step tutorials
0installs or licences
Downloadable setup

Take the whole case with you

Every simulation in AnantaSim is a real OpenFOAM case. Download it with its 0/, constant/ and system/ folders and run it on your own workstation or cluster.

  • Download the setup, the results, or both
  • Export one item or several at once from My Projects
  • Standard OpenFOAM dictionaries, no proprietary format

Case-file download is available on the Student, Startup and All Access plans.

Backward-facing step recirculation zone simulated in AnantaSim
AI diagnosis & assistant

An AI that reads the logs so you don't have to

When a mesh or solver job fails, the AI reads the logs and comes back with the primary error, a plain-language summary and suggested fixes. Dedicated specialists cover snappyHexMesh, checkMesh, OpenFOAM solvers, Gmsh, cfMesh and code_aster.

  • Ask the assistant to change settings in plain language — it asks before applying anything
  • snappyHexMesh help covers castellation, snapping, layers and mesh quality
  • Chat history is saved per project, and a chat can be kept private

Available on paid plans. AI features use credits.

AI assistant diagnosing a failed simulation job
Credit guards

Stop paying for runs that have already failed

A dry run checks your whole setup in a single time step before you commit compute. During a run, AnantaSim stops gracefully on NaNs or exploding residuals and keeps the last good time step. Solvers that hang are stopped too.

  • Dry run is on by default
  • Graceful abort writes the last time step so you can restart from it
  • Live residuals and function-object plots while the job runs
Live residual monitoring with divergence detection
Post-processing

ParaView in the browser, plots you can check

Explore results in up to four linked views: slices, clips, contours, streamlines, glyphs, particle tracers and Lagrangian particle tracks. Compare runs on shared plots and overlay your own experimental data.

  • Compare simulations side by side
  • Import reference data from CSV, TXT or DAT files
  • Export any plot as CSV
Three linked ParaView views comparing turbulence models in AnantaSim
Simulation Marketplace

Publish your work, and sell it if you like

Publish a validated project with a public link and price it in credits or money. Buyers get their own copy to run, and can leave a review.

  • Every listing is reviewed before it goes live
  • Subscribed sellers keep 85% of each sale
  • Spend your earnings on credits or request a payout

Publishing requires a paid plan.

Publishing a project to the AnantaSim Simulation Marketplace
The rest of the toolkit

Real OpenFOAM under the hood

The meshers, solvers and physics models you would expect, plus the tools to bring in your own geometry and work as a team.

01

Four meshers and their utilities

Gmsh, snappyHexMesh, cfMesh and blockMesh, plus merge meshes, split mesh regions, create patch, topoSet, baffles and extrusion.

02

48 OpenFOAM solvers

Incompressible and compressible flow, conjugate heat transfer, VOF and Eulerian multiphase, combustion, Lagrangian sprays, overset meshes and solid stress.

03

Physics models you would expect

18 RAS, LES and DES turbulence models, P1 and fvDOM radiation, combustion and chemistry with CHEMKIN import, MRF, SRF, mesh motion, porosity and fvOptions.

04

AI CAD from a sentence or a sketch

AI writes parametric CadQuery code, validates it and returns a STEP file you can tweak by parameter. Uses credits.

05

Bring your own geometry and mesh

Upload STEP, IGES, BREP or GEO geometry, STL and OBJ surfaces, or an existing OpenFOAM polyMesh or MED volume mesh.

06

Share, version and undo

Share projects by email as Viewer, Editor or Admin. Every edit autosaves with undo and redo, and named versions can be compared or restored. Sharing and versions are on paid plans.

Workflow

From geometry to comparison, without switching tools

  1. 01

    Geometry

    Build shapes, upload CAD or generate it with AI

  2. 02

    Mesh

    Gmsh, snappyHexMesh, cfMesh or blockMesh

  3. 03

    Set up

    Solver, physics, boundary conditions, numerics

  4. 04

    Run

    Dry run, then parallel cores with live monitors

  5. 05

    Visualise

    ParaView in the browser

  6. 06

    Compare

    Runs, plots and your own data

Physics & solvers

48 solvers, set up through forms

Pick a solver family and AnantaSim writes the OpenFOAM dictionaries for you. No OpenFOAM or Linux experience is needed to get started.

  • Incompressible: simpleFoam, pimpleFoam, pisoFoam, SRF and porous variants
  • Compressible: rhoSimpleFoam, rhoPimpleFoam, rhoCentralFoam, sonicFoam
  • VOF multiphase: interFoam, interIsoFoam, compressibleInterFoam, driftFluxFoam
  • Eulerian multiphase: twoPhaseEulerFoam, reactingTwoPhaseEulerFoam, multiphaseEulerFoam
  • Buoyancy: buoyantSimpleFoam, buoyantPimpleFoam and Boussinesq variants
  • Conjugate heat transfer: chtMultiRegionFoam, chtMultiRegionSimpleFoam
  • Combustion: reactingFoam, rhoReactingFoam, fireFoam, XiFoam, chemFoam
  • Particles & sprays: sprayFoam, reactingParcelFoam, DPMFoam, MPPICFoam, coalChemistryFoam
  • Solid stress: solidDisplacementFoam, solidEquilibriumDisplacementFoam

Overset variants are available across several families. Structural FEA with code_aster (linear static) is in beta.

Dam break multiphase simulation in AnantaSim
Built for

The same platform, shaped around how you work

Students

Learn CFD on the toolchain industry uses, with guided tutorials and an AI that explains your errors.

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Startups & MSMEs

Test flow and thermal ideas before you build, without workstations, licences or a CAE team.

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Professionals

Full OpenFOAM depth for consultants and CFD engineers, with validation tools and client sharing.

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Enterprise

Organisations, groups and credit pools, so engineering teams share one toolchain under one budget.

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Start free. Pay for compute as you use it.

Plans for every stage: Free, Student, Startup, Professional, Enterprise and All Access. Credits you buy separately never expire.

Sign up free → See plans ↗ Talk to sales

This offering is not approved or endorsed by OpenCFD Limited, producer and distributor of the OpenFOAM software via www.openfoam.com, and owner of the OPENFOAM® and OpenCFD® trade marks. code_aster is developed by EDF and distributed under the GNU GPL.