(03-05-2019, 11:26 AM)Cyberben3d Wrote: Hi, I'm wondering if Obi Fluid can generate visuals similar to CFD software, such as this video demonstrates:

https://youtu.be/2RBOtd-Z8O8?t=31

We are trying to create a virtual Wind Tunnel in Unity to demonstrate airflow properties around airfoil shaped objects and other things. I've been looking into importing vector fields from Maya Fluids and Fume FX but it would be really cool to be able to do something in real-time. We will have control over the hardware it runs on so we can build something with a lot of CPU/GPU power.

Another thing we'd like to do is the classic wind tunnel example using a car:

https://www.youtube.com/watch?v=sV_6E1Lh7yo

Even if it can only do it in 2D it would be useful as here:

https://www.youtube.com/watch?v=Png0fnG0b_U

I just haven't seen any demo videos of Obi Fluid that show this type of fluid simulation.

Thanks!

(03-05-2019, 02:29 PM)josemendez Wrote: Hi there,

Yes, this is completely doable. We even include a sample scene of a basic karman vortex street . I'm attaching a video of it.



The scene shows it in 2D for visualization purposes, but the same works in 3D (Obi treats 2D as 3D with the Z coordinate clamped to zero). This manual page might also prove useful to know how the scene was made:
http://obi.virtualmethodstudio.com/tutorials/particleadvection.html

Note that you can use HSDFs (hierarchical signed distance fields) for fast, accurate collision detection against complex arbitrary shapes:
http://obi.virtualmethodstudio.com/tutorials/distancefields.html