Select the Phoenix Simulator. Disable the Gravity since a nebula supposedly forms in outer space. Change the Conservation Method to Buffered, with a Quality of 40. Set the Steps Per Frame to 2. The Buffered method has the weakest conservation strength and shortest range, but produces nice details. For in-depth information, check the Conservation documentation.
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As we simulated without the Temperature channel, in this special case, there is no difference in the simulation results with or without gravity.
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Here is a test render up to this step. We can see a better pattern formation, compared to the results with default Dynamics settings.
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Resimulation
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Open the Phoenix Simulator → Resimulation rollout and enable Grid Resimulation.
Note that when you enable Resimulation, Phoenix will try to read the cache files for preview and rendering from the Resimulation Output Path, instead of the 'regular' Output. Don't worry if the Viewport goes blank and the preview disappears - you can always go back to the original cache files by disabling the Resimulation.
Set the Amp.Resolution to 0.2. This parameter is used to increase the resolution of the grid during the Resimulation process.
Set Amp. Method to Wavelet Nice and Wavelet Strength to 1.0.
Press Simulator → Simulation rollout → Start to begin the Resimulation.
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We set the Wavelet Strength to 1.0 instead of 3 (default value), because we want to add details to our base simulation, but without overdoing it.
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You can set the Amp.Resolution to an even higher value to get a more detailed result.
