FX -- Fluid feature eXtraction
In the past, feature extraction and identification were interesting concepts,
but not required to understand the underlying physics of fluid flow simulations.
This is because the results of the more traditional tools were interactive
and easily abstracted so they could be represented to the investigator.
These visualization tools worked and properly conveyed
the collected information at the expense of much interaction. For unsteady
flow-fields, the investigator does not have the luxury of spending time
scanning only one ``snap-shot'' of the simulation. Automated assistance is
required in pointing out areas of potential interest contained within the
Fluid flow features such as vortices, separation, boundary layers and shocks
are items of interest that can be found in the results obtained from
CFD simulations. The visualization system's suite of general-purpose tools
(e.g., streamlines, iso-surfaces, cutting planes, and etc.) produce imagery
which requires inference in order to analyze CFD data-sets.
Vortex Core Gallery
Boundary Layer/Wake Gallery
MIT Aero/Astro Scientific Visualization home page
- Identification of Swirling Flow in 3-D
AIAA Paper 95-1715, San Diego CA, Jun. 1995.
- Vortex Identification -- Applications in Aerodynamics: A Case Study.
IEEE Computer Society, Visualization '97, Oct. 1997.
- Automatic Vortex Core Detection. IEEE Computer Graphics and Applications,
IEEE Computer Society, Vol 18. No. 4, pp. 70-74, July/Aug. 1998.
- Automated Feature Extraction from Transient CFD
Proceeding of the 7th Annual Conference of the CFD Society of Canada,
Halifax, NS, May 1999. Keynode Address.
- Shock Detection From Computational
Fluid Dynamics Results. AIAA Paper No. 99-3285, Norfolk VA, June, 1999.
- On the Velocity Gradient Tensor and
Fluid Feature Extraction. AIAA Paper No. 99-3288, Norfolk VA, June, 1999.
- Using Residence Time for the
Extraction of Recirculation Regions. AIAA Paper No. 99-3291, Norfolk VA,
Author: Bob Haimes, firstname.lastname@example.org