EnvirVis13

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https://diglib.eg.org/handle/10.2312/976

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Browsing EnvirVis13 by Subject "I.3.7 [Computer Graphics]"

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    Rendering Technique of Multi-layered Domain Boundaries and its Application to Fluid Flow in Porous Media Visualizations
    (The Eurographics Association, 2013) Naumov, D.; Bilke, L.; Kolditz, O.; O. Kolditz and K. Rink and G. Scheuermann
    Current visualization techniques for computational fluid dynamics applications are sofisticated and work well in simple geometries. For complex geometries like pore spaces, multiple domain boundaries are obstructing the view and make the studying of fluid flow fields difficult. To overcome these deficiencies we use two-sided materials to render the domain boundaries. Using this technique it is possible to place the camera inside the domain and to have a non-obstructed view on the surrounding flow field without losing spatial reference to the domain boundaries. As a result a larger part of fluid flow visualization is visible. Two-sided material rendering was successfully applied to display still images with Blender Cycles renderer and in a virtual reality environment.
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    Visualizing Saline Intrusion in a Three-Dimensional, Heterogeneous, Coastal Aquifer
    (The Eurographics Association, 2013) Walther, M.; Bilke, L.; Delfs, J.-O.; Graf, T.; Grundmann, J.; Kolditz, O.; Liedl, R.; O. Kolditz and K. Rink and G. Scheuermann
    We visualize remediation scenarios for a coastal aquifer in Oman, where the natural fresh-saltwater interface is negatively affected by groundwater pumping for irrigation. The 3D aquifer is characterized by strong heterogeneities ranging from local to regional scale, which impose visual challenges in the interpretation of large data amounts. This paper addresses the visualization workflow, which helped to ensure correct model setup and successful calibration of a transient model run. The modelling and visualization exercise identified sensitive areas for salinization along the coast and assessed the impact of remediation measures on the groundwater reservoir in space and time. Proper visualization helped to interpret and illustrate the complex results adequately, and to transfer scientific information to stakeholders.