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I am making a fluid sim with blender 2.77 (same result in 2.79) in cycles render. Water flows from a pipe into a pool and there are a few obstacles etc.

Now I have an issue if I set the quality factor high (100, 120, 150, 200) always the same result with different forms. Here the picture: Quality 200, 1-2 Subdivisions, 1.0-1.5 smoothing : enter image description here

The former picture looks good, though it still has the black shadow on the inflow water. Quality 80, 1 Subdivision, 1.0 smoothing

I am trying to get rid of the black spots/shadows in the water. The lighning is done mainly by the world and one lamp.

Thanks for any help.

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    $\begingroup$ can you please attach the blend file ? $\endgroup$
    – Shams M.Monem
    Commented Sep 11, 2017 at 8:58
  • $\begingroup$ I solved the issue with the black stripe in the pool. I changed the container of the water domain from "both" to "shell" in the "Volume Initialization" settings. But still have issues with the inflow. $\endgroup$
    – Slev1n
    Commented Sep 11, 2017 at 14:26
  • $\begingroup$ I am only allowed to post two links. So I deleted the second picture. $\endgroup$
    – Slev1n
    Commented Sep 11, 2017 at 14:33

1 Answer 1

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I solved both issues:

1, Getting rid of the black "stripe": Setting the container (the concrete surrounding the water) in the fluid simulation under the "Volume Initialization" settings from "both" --> "shell". enter image description here

2, Getting rid of the black surface of the water inflow: Setting the amount of "max bounces" at least at 8.

enter image description here

It is still not perfect, but definately an improvement.

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