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I am in the process of creating the smoke simulation for a live action shot of an explosion coming out of a window.

I like the consistency and quality of the smoke except for the particles when they get further away from the blast. They are looking very light/wispy and have some grainy parts that makes is look uncanny.

My Smoke settings:

Domain Resolution: 128

High Res: 5

Subframe samples 50

Domain smoke thickness: 600

Smoke particle size: 0.1

400 particles released over 2 frames in a single burst

Initial velocity box checked and set to .2

Render Settings:

10 samples(Even when I go to 30 I still have this issue)

1.00 Clamp indirect

1.00 Clamp direct

0.001 Step Size

Max steps 1024

Does anyone know a way I can fix this? I am going for something like the result shown in the image below. Notice how it's particles are dense enough to be a thick continuation of the original cloud of debris. They are not a mess of blur and wisps etc.

Thank you!

enter image description here

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Have you tried animating the size of the smoke particle size to increase from 0.1 to say 2 or 3 over the first 20 frames? They will emit thicker smoke as they get further from the start point.

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