Levkovvvv

1-116: Various student gear (Navigator, Prima, EQ) down to 240 size (up to 0.9 WL) 117- 257: NZ Safire 2 169 (1.29 WL) 258 - 276: Jojowings Raptor 135 (1.61 WL) 277 - 380: Icarus X-fire 138 (1.58 WL) 381 - 391: Icarus X-fire 124 (1.78 WL) 392 - 429 and counting: Fluidwings Gangster 107 (2.06 WL)

I studied aerospace engineering and my university had a rather large horizontal wind tunnel, with maximum speed of around 300 km/h. I've been inside it while it was operating (at a lower speed) to hold a smoke machine nozzle to help visualize the airflow. Walking is not fun even at slower speeds, especially because the surface is slick and there are no things to hold on to. I would not really recommend replicating the video you linked, as any sort of malfunction in the system holding you down would send you flying across the tunnel at high speed, all the way to the safety net / direction fins (which are both made of metal and collision would leave you with broken bones or worse). Just go to the skydiving wind tunnel, you will have much more fun.

Hi Soude, CFD isn't really a simple straight forward "someone gives you an algorithm, you repeat it, and it works" type of problem. It takes some knowledge in fluid dynamics to understand what is going on in the background (and to enable you to differentiates a bullshit solution that converged, from one that actually makes sense), and it takes some understanding of the actual methods that run in the background of your CFD solver to know how to adjust it's parameters (mesh type, size, and methods being some but not all of them, as simulation settings influence the solution in a very meaningful way). I would recommend starting with these tutorials by Cornell university which I found very helpful when I was a student (pay particular attention to the wind turbine one). These are by no means a guarantee of success, but they should help you keep your calculation error at no worse than 40%. If you want better than that, there is a lot of learning involved...