|Title||Volume Deformations in Grid-Less Flow Simulations.
|in||Computer Graphics Forum (Proc. of EuroVis 2009)|
Harald Obermaier, Martin Hering-Bertram, Jörg Kuhnert, Hans Hagen |
|Keyword(s)||integrated deformation; flow separation; flow segmentation; flow particle deformation|
This paper presents a novel method for the extraction and visualization of volume deformations in grid-less point based flow simulations. Our primary goals are the segmentation of different paths through a mixing device and the visualization of ellipsoidal particle deformations. The main challenges are the numerically efficient processing of deformation tensors and the robust integration of stream- and streaklines at boundaries of the dataset such that closed segments are obtained. Our results show two- and three-dimensional particle deformations as well as the segmentation of volumes in stationary fields and areas in time-dependent datasets taking consistent paths through a mixing device.
The main contributions are three-fold:
-Robust extraction and combination of 3D separation surfaces in flow fields and analysis of volume deformations.
-Integration of boundary geometry into streak-lines based flow segmentation.
-Integration and visualization of flow particle deformations along flow lines as accumulation of local velocity gradient tensors.