This scene in Unreal Engine contains no traditional meshes, polygons, texture maps etc. - only volumetric data imported in NeRF & VDB formats.
UE project and NeRF data from TurboSquid by Shutterstock
VDB tornado sequence from JangaFX
NeRF plugin from Luma AI
more of my simulation videos here: / jasonkey3d
EmberGen does REAL-TIME VOLUMETRIC FLUID SIMULATIONS FOR GAMES AND FILM
https://jangafx.com/software/embergen/
Follow me here:
/ key_vfx
/ keyjason