We describe an interactive toolkit used to perform comparative analysis of two or more data sets arising from numerical simulations. Several techniques have been incorporated into this toolkit, including (1) successive visualization of individual data sets, (2) data comparison techniques such as computation and visualization of the differences between data sets, and (3) image comparison methods such as scalar field height profiles plotted in a common coordinate system. We describe each technique in detail and show example usage in an industrial application aimed at designing an efficient, low-NOx burner for industrial furnaces. Critical insights are obtained by interactively adjusted color maps, data culling, and data manipulation. New paradigms for scaling small values in the data comparison technique are described. The display device used for this application is the CAVE virtual reality theater, and we describe the user interface to the visualization toolkit and the benefits of immersive 3D visualization for comparative analysis.

Issue Section:
Technical Papers
Keywords:
furnaces, virtual reality, data visualisation, melting, aluminium, industrial plants
Topics:
Aluminum, Furnaces, Virtual reality, Visualization, Scalar field theory, Industrial furnaces
1.
Kim, Kwansik, and Pang, Alex, 1997, “Projection-Based Data Level Comparisons of Direct Volume Rendering Algorithms,” Technical Report UCSC-CRL-97-16, University of California at Santa Cruz.
2.
Pagendarm, Hans-Georg, and Post, Frits, 1995, “Comparative Visualization—Approaches and Examples,” Visualization in Scientific Computing, pp. 95–108, Springer.
3.
Pagendarm, Hans-Georg, and Post, Frits, 1997, “Comparative Visualization of Flow Features,” Scientific Visualization: Overviews, Methodologies, and Techniques, pp. 211–227, CS Press.
4.
Trapp, Jens, and Pagendarm, Hans-Georg, 1996, “Data Level Comparative Visualization in Aircraft Design,” Proceedings of Visualization ’96, pp. 393–396, IEEE.
5.
Cruz-Neira, C., Sandin, D. J., and DeFanti, T. A., 1993, “Surround-Screen Projection-Based Virtual Reality: The Design and Implementation of the CAVE,” ACM SIGGRAPH 93 Proceedings, pp. 135–142. ACM.
6.
FLUENT Corporation, 1999, http://www.fluent.com.
7.
Bryson
,
S.
,
1992
, “
Virtual Reality Takes on Real Physics Applications
,”
Comput. Phys.
,
6
(
4
), pp.
346
–
352
.
8.
Bryson, S., and Levit, C., 1991, “The Virtual Windtunnel: An Environment for the Exploration of Three-Dimensional Unsteady Flows,” Proceedings of the Visualization ’91 Conference, pp. 17–24. IEEE Computer Society Press.
9.
Insley, Joe, 1998, “Control Panel User Interface for the Cave,” Private Communcation, Argonne National Laboratory.
10.
Ba, Ibrahima, Malon, Christopher, and Smith, Barry, 1998, Design of the ALICE Memory Snooper, http://www.mcs.anl.gov/ams.
Copyright © 2002
 by ASME
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