Why I Built a Wind Tunnel That Runs in Your Browser

July 2026

Most people think that testing how air moves around a car needs a huge lab and a computer that costs more than the car itself. For a long time I thought that too. But real aerodynamics should not be locked away behind expensive software and machines that only big companies can afford. To actually help people learn, I wanted to build something that anyone could open and use right away.

The wall I kept hitting

I ran into this problem myself. Last year I wanted to test how the air moves around F1 cars, just on my own for fun. But when I started looking for a tool, I could not find a single website that was actually beginner friendly and did not cost a ton of money. The ones that were real were either thousands of dollars a year or so complicated that you needed a whole class just to set them up. That is when it hit me that if I was stuck like this, a lot of other students and teams probably were too. That never sat right with me.

What I actually built

So I built CFD Tunnel. The idea behind it is simple. You upload your model, you press one button, and you watch the air move around it, all inside your browser. There is no install, no setup, and no giant machine humming in the corner. It is just your design and the real flow around it.

Why the results have to be real

A lot of free tools fake this part. They show you pretty lines that look cool but do not actually mean anything. I did not want that at all. Under the hood, CFD Tunnel runs a real OpenFOAM simulation, which is the same kind of solver that actual engineers use. So when it gives you a drag number, that number really comes from solving the physics, not from a lookup table. To me, being honest about the results is the whole point. A tool that lies to you is way worse than no tool at all.

Who I made this for

I mostly built this for people like the student teams I kept thinking about. FSAE cars, F1 in Schools projects, rockets, drones, anything that has to move through air. For example, a team can now test three different wings in one afternoon and actually see which one works best, instead of just guessing. Watching a group of students use a real simulation to make a real decision is the thing I am most proud of.

In the end, I did not build CFD Tunnel to go up against the huge engineering companies. I built it because good tools should not only belong to the people who can pay the most. When you take something that used to need a lab and a fortune and put it in a browser tab, you give a lot more people the chance to learn and build cool things. That is exactly the kind of thing I want to spend my time on.