[Amath-seminars] Boeing Lecture today at 3:30 in Gug 218
Nathan Kutz
kutz at uw.edu
Fri Jan 20 12:03:25 PST 2012
Hi All
Yesterday's Boeing seminar will be held today at 3:30 in GUG 218 (NOT
220).
STUDENTS: For those around, there is a SIAM meeting with Walter at
2:30-3:15 in GUG 415L
Nathan
------
Dear all,
This Thursday January 19th, Walter Strauss from Brown will be the
guest of the AMATH dept. and will deliver the Boeing Distinguished
Colloquium.
Hope to see you all there!
-----------------------------------------------------------------------------------------------
Boeing Distinguished Lecture Series
Walter Strauss
Brown University
Title:
Steady Rotational Water Waves
Thursday, January 19, 2012
220 Guggenheim, 4:00 pm
(Reception to follow on 4th floor of Guggenheim)
Abstract:
Precise study of water waves began with the derivation of the basic
mathematical equations of fluids by the great Euler in 1752. In the two
and a half centuries since then, the theory of fluids has played a
central
role in the development of mathematics. Water waves are fluids with a
free
surface. I will discuss periodic waves that travel at a constant speed.
Using local and global bifurcation theory, we now know how to prove that
there exist very many such waves. They may have either small or large
amplitudes. I will outline the existence proof, joint with Adrian
Constantin, and then exhibit some computations, joint with Joy Ko,
of the waves using numerical continuation. The computations
illustrate certain relationships between the amplitude, energy and mass
flux of the waves. If the vorticity is sufficiently large, the first
stagnation point of the wave occurs either at the crest, on the bed
directly below the crest, or in the interior of the fluid. The
vorticity also affects the pressure beneath the fluid and the behavior
of
the fluid particles. This work is a perfect example of the synergy
between
theory and computation.
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