IndeGS : index supported graphics data server for CFD data postprocessing
Christoph Brochhaus, Thomas Seidl · RWTH Publications (RWTH Aachen) · 2007
Virtual reality techniques particularly in the field of CFD (computational fluid dynamics) are of growing importance due to their ability to offer comfortable means to interac-tively explore 3D data sets. The growing accuracy of the simulations brings modern main memory based visualiza-tion frameworks to their limits, inducing a limitation on CFD data sizes and an increase in query response times, which are obliged to be very low for efficient interactive ex-ploration. We therefore developed “IndeGS”, the index sup-ported graphics data server, to offer efficient dynamic view dependent query processing on secondary storage indexes organized by “IndeGS ” offering a high degree of interactiv-ity and mobility in VR environments in the context of CFD postprocessing on arbitrarily sized data sets. Our demonstration setup presents “IndeGS ” as an inde-pendent network component which can be addressed by ar-bitrary VR visualization hardware ranging from complex se-tups (e.g. CAVE, HoloBench) over standard PCs to mobile devices (e.g. PDAs). Our demonstration includes a 2D vi-sualization prototype and a comfortable user interface to simulate view dependent CFD postprocessing performed by an interactive user freely roaming a fully immersive VR envi-ronment. Hereby, the effects of the use of different distance functions and query strategies integrated into “IndeGS ” are visualized in a comprehensible way. 1.