Fire Hydrant - Liquid Simulation

[thhvfx]

Hi,

I currently working on a scene with fire hydrant got hit by a car and water pump out that. I'm trying to take advantage of the waterfall preset. I like the look of the foam and splash but I'm having a hard time to control the fluid direction. The water fall is going downward and my fire hydrant is going upward. First I move the container up cos my fluid is going up then I try to add a curve follow path so the water can go upward and to a point and I expect the gravity may pull it down depend on how I change the gravity strength. The fluid was going up at first but it can't go to the height that I want doesn't matter how I change the follow path speed. Second method I tried is I revert the direction of the gravity so my fluid actually went to the height that I want but I don't know how to pull the fluid it down.

Hope I can get some tips from you guy.

Thanks,

[Svetlin.Nikolov]

I think you'll run into more trouble reversing the gravity - I'd suggest to have it in its natural direction and make the Follow Path do the rest of the job. In the latest nightlies there is a Force preview in the viewport you could use to make the process of adjusting easier. Together with the gravity strength, I think the Influence of the Follow Path would be the most important parameter as well - it would allow you to balance between the effect of the force and the gravity basically.

Hope this helps

[thhvfx]

I will try with your suggestion tomorrow. I currently rotate my scene up side down before I took off to take advantage of the waterfall preset. I know it sounds lame .

Thanks Svetlin

[thhvfx]

One more thing is I'm using a cylinder shape to emit fluid. The fluid emit upward and outward around the cylinder base on the normal direction. So I deleted all the face around the cylinder to prevent fluid emit outward but the fluid just not emit any fluid at all. I tried to create a new scene create a new cylinder delete all the face except the one facing upward, delete history, apply the preset again and still the fluid just not emitting. That's also the issue I'm having a hard time with. The main idea is the fire hydrant got hit by a car, water will come out from the ground will hit a certain height then pull down by the gravity.

[Svetlin.Nikolov]

Hey,

You should always use closed geometry when it must emit using Phoenix. You should be able to select emitting faces using Polygon ID or Vertex Color instead.

Cheers!

[thhvfx]

I'm using a waterfall preset which is working fine so far and I really like the look. As soon as i change the emit mode to Volume Inject . Phoenix stop emitting fluid. Any reason why?

Thanks

[Svetlin.Nikolov]

Yup, in case you mean using Volume Inject with an open geometry, the reason is that open geometries don't have a volume, while Surface Force just needs the surface and the normals and it can discharge properly even this way.