Im Rahmen des Johannes-Kepler-Symposiums für Mathematik und des SFB F013 wird
Professor Dr. Craig C. Douglas (University of Kentucky, Lexington, KY and Yale University New Haven, CT ) am
Mittwoch, 15.05.2002 um 17.00 Uhr im Hörsaal 10 einen öffentlichen Vortrag
(mit anschließender Diskussion) zum Thema "Modeling and Computation of Sea Surface Heights in Complex Domains" halten, zu dem die
Veranstalter des Symposiums, O.Univ.-Prof. Dr. Ulrich Langer und
A.Univ.-Prof. Dr. Jürgen Maaß, hiermit herzlich einladen.
Der Intention des Symposiums entsprechend ist der Vortrag so konzipiert,
daß er nicht nur für Spezialisten, sondern auch für Studierende
aller Semester und Gäste von außerhalb der Universität interessant ist.
Modeling and Computation of Sea Surface Heights in Complex Domains
A mathematical model and computational results are presented for wind
driven
ocean modeling based on the isopycnal version of the Spectral Ocean
Element
Method. The method is robust, accurate over a many year simulation, and
scales extremely well on a wide variety of parallel computers including
traditional supercomputers and clusters.
SEOM features advanced algorithms, based on h-p type finite element
methods,
allowing accurate representation of complex coastline and oceanic
bathymetry,
variable lateral resolution, and high order solution of the three
dimensional
oceanic equations of motion.
An additive Schwarz preconditioner reduces the expected run time by
roughly a
factor of three, independent of the number of processors. Cache aware
techniques also are quite effective in a filtering procedure that occurs
frequently.
This is joint work with Gundolf Haase (Linz) and Mohamed Iskandarani
(Miami).
[main page: http://www.numa.uni-linz.ac.at ]