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Using RealFlow to create droplet effects

By Vikrant J Dalal
Web: Open Site
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Date Added: 25th July 2014
Software used:
Misc

Modify the parameters of the emitters

Here we have to change the parameters of our emitters. We will not change all the emitters, just modify the first emitter and then copy all the parameters and paste them into the other four emitters.

To modify the parameters, select the emitter and go to Node Params, which should be located on the right-side of the screen interface. Place all of the parameters into the relevant boxes, then copy and paste all of them to the other four emitters.

1. Sphere 1
Particles -
• Type - Liquid
• Resolution - 5
• Density - 5000
• Int Pressure - 0.1
• Ext Pressure - 20.0
• Viscosity - 250.0
• Surface Tension - 0
• Interpolation - None
• Compute Vorticity - No
• Max Particles - 5000000

Sphere -
• Speed - 0.0
• Randomness - 0.0
• Fill Sphere - Yes

1896_tid_2.jpg
Placing the parameters into one emitter's settings, then pasting them to the other four

Gravity Daemon

Now we need to add a Gravity Daemon and modify the parameters. To create this Daemon, go to Daemon Menu > Gravity. There is no need to change the position or any parameters of this Daemon, so keep all settings at default.

1896_tid_3.jpg
Adding a Gravity Daemon to the scene

Creating a plane

Now we need to create the base that our droplets are going to hit, so we will create a plane. To create the plane, go to Object Menu > Plane. Don't change the Position, Rotation or Scale of this plane. Keep it default.

Now let's modify the Particle Fluid Interaction parameters, because we want the base to feel like a rough surface. To make this kind of surface, we have to make some changes to the parameters. So let's modify the Particle Fluid Interaction parameters of the plane. We are not going to change all the parameters, only three of them as below.

Parameters
• Bounce - 0.1
• Sticky - 25.0
• Roughness - 1.0

1896_tid_4.jpg
Creating a plane surface for the droplets to interact with

Animating the droplets

With the help of a sphere we are going to mix all the liquid droplets together on the plane, and for that reason we have to create a sphere. We will then have to animate this sphere in a spiral pattern on the surface plane. So let's create the sphere.
To create the sphere, go to Object Menu > Sphere, then place this sphere near the plane and exactly below the emitters.

Sphere
• Position – X: -1.81125 | Y: -1.32715 | Z: 0.22493
• Scale - X: 0.3 | Y: 0.3 | Z: 1.0

Now let's animate the sphere.

I animate this sphere in a spiral/circular shape, but you can animate the sphere as per your requirements. To animate it, just go to frame 50, change the position of the sphere and click the right-mouse button on all three axes and select Add Key. Then go to frame 70, change the position and again select Add Key. You can follow this process until the last frame to get a proper animation of your sphere.
This image here shows the animated shape. Remember, you should only animate this sphere after our last liquid droplet has hit the plane – only then will our sphere be able to mix all the liquid droplets.

1896_tid_5.jpg
Showing the shape of the animation on the plane




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