CFD.NINJA
CFD.NINJA offers free ANSYS CFD tutorials designed to help engineers, students, and researchers learn Computational Fluid Dynamics (CFD) step by step. Since 2014, we've built more than 150 tutorials using ANSYS Fluent, ANSYS CFX, ANSYS Meshing, ANSYS ICEM CFD, DesignModeler, SpaceClaim, OpenFOAM, Rocky DEM, Autodesk Inventor, and Ensight — covering everything from beginner basics to advanced simulations. From your first mesh to a fully converged simulation, we keep our ANSYS CFD tutorials free, practical, and up to date.
Whether you're a student working on a thesis, a researcher publishing a paper, or an engineer solving a real-world problem, our tutorials walk you through every step with screenshots, setup files, and clear explanations you can follow at your own pace. Start with our ANSYS Fluent tutorials for fluid flow, heat transfer, and multiphase simulations, explore our ANSYS CFX tutorials for turbomachinery and rotating equipment, or learn proper meshing techniques before you run your first simulation.
If you work outside the ANSYS ecosystem, we also cover OpenFOAM for open-source CFD and Autodesk Inventor for CAD and design workflows. We round out the library with dedicated tutorials for ANSYS ICEM CFD, SpaceClaim, DesignModeler, Rocky DEM, and Ensight, so most of the pre- and post-processing tools used in a typical CFD workflow are covered in one place. Each tutorial is written to be practical: real geometries, real boundary conditions, and results you can compare against your own work.
Browse our complete library of 175+ free tutorials organized by software and topic, or visit the official ANSYS Fluent product page to see what's new in the software itself. We add new content every month based on requests from our community, so bookmark this page and check back often for the latest ANSYS CFD tutorials.
Follow us on YouTube, Facebook, and Instagram for new tutorials and the chance to join our CFD book and gift card giveaways.
Free Download: CFD Meshing Quick Reference
A PDF reference sheet with y+ targets by turbulence model, inflation layer growth rates, and mesh quality thresholds — all in one place.
More than 150 Free Tutorials using Ansys Fluent, Ansys CFX, Ansys Meshing, DesignModeler, SpaceClaim, Autodesk Inventor, ICEM CFD.
CFD.NINJA Tutorials
We've built these tutorials over several years so you can follow real CFD workflows step by step, using ANSYS Fluent, ANSYS CFX, and OpenFOAM among other tools. Most include downloadable files, geometries, and meshes so you can practice hands-on — from basic setups to advanced simulations. New tutorials for both beginners and experts are added regularly, so check back often or subscribe to get notified.
