Chemistry Seminar Series: Dr. Jan ÅströmExport this event to calendar

Wednesday, April 24, 2013 — 2:30 PM EDT

On the diversity of particle based methods

Dr.  Jan Åström
CSC - IT Center for Science
Finland

Wednesday, April 24, 2013
2:30 p.m.

C2-361 (Reading Room)

Abstract:  Traditionally numerical modelling on scales larger than individual atoms has been done as continuum modelling based on solving a set of differential equations. In order to solve diff. equations numerically they have to be made discrete. Particle based methods skip the redundant step of constructing a differential model of an originally discrete system and there after solving the discrete version of the diff. equations. The particle based method strive to find a relevant length scale on which a system is naturally discrete and then simulating the dynamics via equations of motion. Such a length scale may be e.g. grain-boundaries, fibers, cells, etc. The talk is focused on applications and example like e.g. glacier calving, fragmentation and cytoskeleton dynamics."

References:

Secondary stiffness transition in anistropic fiber networks -- stiffness gating for mechanosensitive smart materials, J. Astrom, S.P.B. Kumar, MKarttunen, Physical Review E 86, 021922 (2012)

Myosin motor mediated contraction is enough to produce cytokinesis in the absence of polymerization, J. Astrom, S. von Alfthan, S.P.B. Kumar, M. Karttunen, Soft Matter 6, 5375-5381 (2010).

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