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nVidia Flow for Particles

I’ve been asked to try and create reasonable looking explosions, using Flow if possible, since it will simulate fluid flow through the air. The project involves large explosions, as from air-dropped 2000 pound bombs, so the typical Michael Bay gasoline explosions are out. Bombs don’t typically make giant fireballs, since the actual combustion completes within such a short amount of time.

So the first question I have is whether this is even possible or feasible with the Flow plugin. I’ve messed around with it, and I can’t seem to find temperature or pressure settings for initial conditions. The voxel-based solution (I’m assuming that’s what the non-particle mode is) can’t seem to do bursts, only things like fire and steam vents. The best I managed to accomplish was with just dropping a butt load of particles into the scene with a modest outward initial velocity and hoping for the best.

My second question is how reliable is the Flow particle mode for you guys? I haven’t been able to get it to interact with the grid in a way that makes sense. The buoyancy settings don’t seem to have any effect, and the particles don’t always seem to couple correctly, even though grid interaction is enabled both in the particle system and the grid. As stated above, I did manage to get something working for a while, but somehow that broke and never fixed itself. I’ve tried making new projects, even completely rebuilding the engine, but it still seems broken. Curiously, the nVidia demos still function, although if I copy the assets into a new project they no longer work. I may have missed a setting somewhere, but I can’t find it.

My third question is about documentation. Having little real experience with nVidia Gameworks stuff, I’ve tried looking for reasonable documentation, but I keep coming up empty. The only things I’ve found seem to be well out of date and no longer seem to apply, having different settings and feature levels from the current implementation. Has anyone found recent documentation for Flow?

Thanks in advance for any help you guys can provide.