Particle-based modelling of flows through obstacles

Emilio N.M. Cirillo, Adrian Muntean, Rutger A. van Santen

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureHoofdstukAcademicpeer review


Particle diffusion is modified by the presence of barriers. In cells macromolecules, behaving as obstacles, slow down the dynamics so that the meansquare displacement of molecules grows with time as a power law with exponent smaller than one. In different situations, such as grain and pedestrian dynamics, it can happen that an obstacle can accelerate the dynamics. In the framework of very basic models, we study the time needed by particles to cross a strip for different bulk dynamics and discuss the effect of obstacles. We find that in some regimes such a residence time is not monotonic with respect to the size and the position of the obstacles. We can then conclude that, even in very elementary systems where no interaction among particles is considered, obstacles can either slow down or accelerate the particle dynamics depending on their geometry and position.

Originele taal-2Engels
TitelComplexity science
Subtitelan introduction
RedacteurenMark A. Peletier, Rutger A. van Santen, Erik Steur
Plaats van productieSingapore
UitgeverijWorld Scientific
Aantal pagina's17
ISBN van elektronische versie9789813239609
ISBN van geprinte versie9789813239593
StatusGepubliceerd - 20 mrt 2019


Citeer dit

Cirillo, E. N. M., Muntean, A., & van Santen, R. A. (2019). Particle-based modelling of flows through obstacles. In M. A. Peletier, R. A. van Santen, & E. Steur (editors), Complexity science: an introduction (blz. 393-409). Singapore: World Scientific.