Peter Singstad (Peter.Singstad@ecy.sintef.no)
Sun, 18 Apr 1999 14:07:49 +0200
Invitation to guest lecture
Wednesday 21. April 10:00
Room 236 in Chemistry building 5 '(Kjemiteknikks lunsjrom)':
MODELLING OF MOLECULAR WEIGHT AND BRANCING DISTRIBUTIONS IN FREE RADICAL
POLYMERIZATION OF ETHENE
by Dr. Michael Wulkow
CiT - Computing in Technology GmbH Rastede
Wednesday April 21 at 10:00
Abstract:
The talk presents numerical software (PREDICI and PARSIVAL) for the
solution of differential equations arising from the modelling of
molecular weight distributions or particle size distributions.
The resulting countable systems of differential equations (discrete
variable) or partial integro-differential equations (continuous
variable) particularly depend on (weighted) sums or integrals of the
distributions and special boundary conditions. The numerical solution of
such systems is still a challenge.
It turns out, that the Galerkin methods of h-p-structure are well suited
for this class of problems, since they allow an efficient reduction of
degrees of freedom, which is quite crucial for such globally connected
systems.
The basic concepts and motivations of the algorithms will be presented
as well as a series of examples from different fields of polymerization
and crystallization.
A particular example is the modelling and simulation of molecular weight
distributions and branching densities in high-pressure polymerizations.
Biographical information:
Michael Wulkow
born 1961,
studied mathematics and physics in Muenster, (1981-1987),
PhD on simulation of MWD's at the Konrad-Zuse-Center Berlin (institute
for Scientific Computing) (1990/91)
founded company "Computing in Technology" in 1992
Welcome!
Best regards
Peter Singstad
-- Peter Singstad, Dr. ing. Phone: +47 73 59 30 00 Research Director Direct line: +47 73 59 43 89 SINTEF Electronics and Cybernetics GSM phone: +47 93 05 93 01 Automatic Control Fax: +47 73 59 43 99 N-7465 Trondheim mailto:Peter.Singstad@ecy.sintef.no
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