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Tracked since2026
0 reviews trackedThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
No software installation or license management required, runs entirely in the browser.
Biggest con
Free tier limited to demo simulations, requires paid plan for saving results and unlimited runs.
TL;DR - Ventorah
- Browser-based CFD simulation for aerospace, automotive, and drone aerodynamics with no installation or license server required.
- Supports real-time 3D visualization of streamlines, pressure fields, and wake, plus engineering results like Cl, Cd, Cm.
- Free tier includes demo simulations; paid plans add unlimited saved simulations, AI assistant, and managed parallel solves.
Pricing: Free plan available
Best for: Growing teams
What is Ventorah?
Ventorah is a browser-native Computational Fluid Dynamics (CFD) tool that lets engineers, designers, and researchers simulate aerodynamic flows directly in the browser without any installation or license servers. It supports uploading 3D geometry in formats like STL, OBJ, STEP, IGES, GLB, and FBX, then configures a virtual wind tunnel with adjustable speed, direction, fluid properties, and turbulence model. The solver, powered by parallel OpenFOAM (snappyHexMesh + simpleFoam) running in Docker, computes streamlines, pressure fields, velocity contours, and engineering coefficients such as lift (Cl), drag (Cd), and moment (Cm). Results are visualized interactively in a 3D viewer with animated flow fields, and users can export data as CSV or PDF reports. The platform also includes an AI assistant that answers aerodynamics questions and offers a comparison tool for side-by-side run evaluation. Ventorah is validated against published wind-tunnel data (sphere drag within ~10% of experiment) and targets aerospace, automotive, and drone applications.
Pros & Cons
Pros
- No software installation or license management required, runs entirely in the browser.
- Validated against real wind-tunnel data, providing credible engineering-grade results.
- Flexible pricing with a free demo tier and paid plans for scaling.
Cons
- Free tier limited to demo simulations, requires paid plan for saving results and unlimited runs.
- Mesh resolution may be lower than dedicated desktop CFD tools (75k+ cells per solve).
- Accuracy is stated as ±10% compared to wind-tunnel data, which may not meet all high-precision requirements.
Key Features
In-browser 3D viewer with orbit, wireframe, transparent, and bounding-box modes plus measurement tools.Virtual wind tunnel with animated streamlines, velocity vectors, pressure/velocity contours, vorticity, wake, and flow separation.Configurable flow setup: speed (1–400 m/s), direction, density, temperature, pressure, humidity, altitude, fluid, and turbulence model.Engineering results including Cl, Cd, Cm, Reynolds number, Mach number, forces, centre of pressure, and surface maps, exportable to CSV and PDF.Interactive charts: lift-vs-angle, drag-vs-speed, pressure/velocity histograms, residual convergence, and mesh statistics.Comparison tool: side-by-side run view with pressure/airflow overlay and performance difference table.AI aero assistant to explain high drag, suggest lift improvements, and provide flow-separation explanations and design recommendations.Validated OpenFOAM backend (snappyHexMesh + simpleFoam) benchmarked against published wind-tunnel data (sphere drag within ~10% of experiment).
Pricing
Freemium
Ventorah offers a generous free tier with optional paid upgrades for advanced features.
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Ventorah FAQ
What geometry file formats are accepted for upload?
Ventorah accepts STL, OBJ, STEP, IGES, GLB, and FBX file formats. Uploaded geometry renders instantly in the WebGL viewer.
How does the AI aero assistant work?
The AI assistant allows you to ask questions like why drag is high or how to increase lift. It provides explanations of flow separation and design recommendations based on your simulation results. The assistant uses Claude AI and in paid plans you can bring your own API key.
Can I run simulations using my own OpenFOAM solver?
Yes, with the Bring-your-own plan ($5/mo) you can point to your own OpenFOAM worker instance and connect your own Claude API key, giving you full control over the solver infrastructure.
What is the range of wind speeds I can simulate?
The virtual wind tunnel supports speeds from 1 m/s up to 400 m/s, covering subsonic and low supersonic flow regimes.
How many cells are used per simulation mesh?
Each simulation uses a mesh of 75,000+ cells built with OpenFOAM's snappyHexMesh, parallelized in Docker for reasonable solve times.
How accurate are the results compared to real wind tunnels?
The solver has been benchmarked against published wind-tunnel data, showing sphere drag predictions within approximately ±10% of experimental values.
Can I compare two different simulation runs side by side?
Yes, the comparison tool lets you place two runs side by side, overlay pressure and airflow visualizations, and view a performance difference table with key metrics.
What export options are available for results?
You can export engineering coefficients and surface maps as CSV files, and generate a full PDF report that includes coefficients, charts, and flow field details.
Source: ventorah.com