Visualizing Turbulent Flow
Visualizing Turbulent Flow
The image is a combined application of "color-vector" and "false-height" to the velocity field of a turbulent jet in a co-flowing stream produced by Dr. Scott Stanley while a doctoral student at UCSD (now at Lawrence Berkley National Laboratory).
Turbulent plane jets are prototypical free shear flows of practical interest in propulsion, combustion and environmental flows. While considerable experimental research has been performed on planar jets, very few computational studies exist. The visualization technique first subtracted out the lower co-flowing velocity, applied a color-wheel representation to the velocity values and then created a three-dimensional effect by warping the image based upon the value of the velocity magnitude using John Moreland's imwrl tool
im2wrl reads an image, creates a quad mesh geometry, colors the vertices by sampling the input image, and saves the resulting (optionally bump-mapped) geometry in a new VRML file.
Richard Charles, John Moreland, San Diego Supercomputer Center, University of California, San Diego
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