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Visualization of Flow Behavior in Earth Mantle Convection
S Schroder1, J A Peterson, H Obermaier
1Fraunhofer Institute for Industrial Mathematics ITWM and Computer Graphics and HCI Group at University of Kaiserslautern. simon.schroeder@itwm.fraunhofer.de
IEEE Transactions on Visualization and Computer Graphics
|September 11, 2015
Summary
Fluid flow mixing, a 4D problem, is visualized in Earth mantle convection simulations. New methods efficiently analyze and render complex geophysical data, aiding scientific discovery.
Area of Science:
- Geophysics
- Computational Fluid Dynamics
- Scientific Visualization
Background:
- Fluid flow inherently causes mixing, a complex 4D process challenging for analysis and visualization.
- Simulating Earth's mantle convection involves large, complex datasets that are difficult for geophysicists to interpret.
- Existing visualization methods struggle with data size, information overload, and occlusion in whole-earth models.
Purpose of the Study:
- To develop and present an integrated system for analyzing, transforming, and visualizing mixing in 3D spherical shell convection simulations.
- To address computational and visualization challenges posed by large-scale geophysical flow simulations.
- To aid geoscientists in understanding mantle convection and homogenization processes.
Main Methods:
- Utilized a finite element model (CitcomS) for simulating mantle convection with passive tracers.
- Implemented intelligent data indexing and caching for efficient access to large simulation datasets.
- Employed a tailored Direct Volume Rendering technique with constant opacity for optimized visualization of spherical shells.
- Computed tracer concentration statistics to quantitatively characterize mixing.
Main Results:
- Developed a processing pipeline that significantly improves the analysis and assessment of simulation output.
- Demonstrated the ability to quickly test hypotheses regarding Earth's mantle convection.
- Achieved smooth animation of time-dependent simulation data through optimized volume rendering computations.
- Enabled geoscientists to focus on scientific analysis rather than data management.
Conclusions:
- The integrated system effectively visualizes and analyzes mixing in complex geophysical simulations.
- The developed methods enhance the interpretation of mantle convection dynamics and homogenization.
- This approach facilitates faster hypothesis testing and deeper understanding of Earth's mantle processes.
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