From Fish to Fusion - Analysis and visualization of dynamical and turbulent
systems
Monday, April 29, 2013 - 4:00pm - 4:50pm
KEC 1001
Allen R. Sanderson
Research Scientist
Scientific Computing and Imaging Institute
University of Utah
Abstract:
In this talk I will highlight research work done for analysis and visualization of
dynamical and turbulent systems. In the first part of my talk I will look at advection -
reaction - diffusion systems and how they can be used for visualizing flow fields. Our
main focus in this research was to develop a glyph that could be used to represent
multivariate data in flow fields. While we were successful in our efforts we unexpectedly
found that our techniques had greater application in developmental biology and pattern
formation. This was an unexpected turn that lead us to ask the proverbial question
"How does a leopard get its spots?"
The second part of my talk will look at tools developed to understand the
topology of magnetic fields in magnetically confined fusion which are a
Hamiltonian system. Of primary concern is the break down of stable magnetic
surfaces into smaller magnetic island chains which leads to a loss of
confinement. At the same time we recently learned such analysis is applicable
to oceanographers who are trying to understand similar phenomena, chaotic
advection. I will highlight two techniques one based finding resonances in the
fieldlines as they precess about the surfaces they lay on and another which
examines their divergence. The finial part of my talk I will highlight
techniques developed for visualizing turbulent systems via the construction of
various type of surfaces.
Speaker Biography:
Allen R. Sanderson has been a research scientist at the Scientific Computing and Imaging Institute University of Utah since 2001 were he conducts research into analysis and visualization of large data simulations. He works with a variety of science applications ranging from plasma physics to medical imaging. He obtained his Ph.D and M.E. from the University of Utah in Computer Science and Bioengineering and his B.S. in Mechanical Engineering from Oregon State University. He has worked in both industry and academia and was a Chateaubriand Fellow.
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