TitleVisualization of Adaptive Mesh Refinement Data (In Proceedings)
inProceedings of Visual Data Exploration and Analysis VIII
Author(s) Gunther H. Weber, Hans Hagen, Bernd Hamann, Ken Joy, Terry J. Ligocki, Kwan-Liu Ma, John M. Shalf
Keyword(s)volume visualization, direct volume rendering, adaptive mesh refinement, computational fluid dynamics, multiresolution method, multigrid technique, hardware-accelerated rendering
Year January 2001
LocationSan Jose,CA
DateJanuary 20--26, 2001
SeriesProceedings of SPIE
PublisherSPIE - The International Society for Optical Engineering
AddressBellingham, WA
Abstract The complexity of physical phenomena often varies substantially over space and time. There can be regions where a physical phenomenon/quantity varies very little over a large extent. At the same time, there can be small regions where the same quantity exhibits highly complex variations. Adaptive mesh refinement (AMR) is a technique used in computational fluid dynamics (CFD) to simulate phenomena with drastically varying scales concerning the complexity of the simulated variables. Using multiple nested grids of different resolutions, AMR combines the topological simplicity of structured-rectilinear grids, permitting efficient computation and storage, with the possibility to adapt grid resolutions in regions of complex behavior. We present methods for direct volume rendering of AMR data. Our methods utilize AMR grids directly for efficiency of the visualization process. We apply a hardware-accelerated rendering method to AMR data supporting interactive manipulation of color-transfer functions and viewing parameters. We also present a cell-projection-based rendering technique for AMR data.