Also see other articles in the series "How to visualize and animate (geophysical) models":
To visualize animated 3D results without simulating real processes, various transparency and motion effects are used. When performing 3D simulations - modeling dynamic processes - we need to be able to show 4D results. When the animated result is visually close enough to the simulation result, it is often called that; in any case, in order to avoid erroneous interpretation of the results, it is necessary to clearly indicate the data and methods used for visualization.
Examples
Water flow simulation (from a destroyed dam) using the Mantaflow simulation framework:
Terrain flooding simulation using Mantaflow:
Animation of magma filling volcano cameras with built-in ParaView tools:
Video from the main page of the project - simulation of a tornado in Mantaflow:
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ParaView
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To animate a volcano model, just use the Animation View in ParaView to set the temporal transparency function and fill the model. A link to the GitHub repository with source data is provided at the end of the article.
References
ParaView project for Rinjani and Tambora volcanoes area, Indonesia - GitHub repository with geological models of the Ridjani and Tambora volcanoes.