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The default rendering settings are tuned to Phoenix simulations, and they might not work well for imported 3rd party cache files.
This is why when loading OpenVDB or Field3D files generated by other software packages, you are given the option to choose a preset. The presets will change the render settings to reasonable default values. The presets will also modify the orientation of the cache files depending on the coordinate system of the source application (Y-up versus Z-up) by Enabling / Disabling the Flip Up Axis option.
You can further edit the parameters in the Rendering rollout to achieve the desired appearance of your simulation.