### Uittreksel

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-2 | Engels |
---|---|

Titel | Complexity science |

Subtitel | an introduction |

Redacteuren | Mark A. Peletier, Rutger A. van Santen, Erik Steur |

Plaats van productie | Singapore |

Uitgeverij | World Scientific |

Hoofdstuk | 13 |

Pagina's | 393-409 |

Aantal pagina's | 17 |

ISBN van elektronische versie | 9789813239609 |

ISBN van geprinte versie | 9789813239593 |

DOI's | |

Status | Gepubliceerd - 20 mrt 2019 |

### Vingerafdruk

### Citeer dit

*Complexity science: an introduction*(blz. 393-409). Singapore: World Scientific. https://doi.org/10.1142/9789813239609_0013

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*Complexity science: an introduction.*World Scientific, Singapore, blz. 393-409. https://doi.org/10.1142/9789813239609_0013

**Particle-based modelling of flows through obstacles.** / Cirillo, Emilio N.M.; Muntean, Adrian; van Santen, Rutger A.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Hoofdstuk › Academic › peer review

TY - CHAP

T1 - Particle-based modelling of flows through obstacles

AU - Cirillo, Emilio N.M.

AU - Muntean, Adrian

AU - van Santen, Rutger A.

PY - 2019/3/20

Y1 - 2019/3/20

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85068112652&partnerID=8YFLogxK

U2 - 10.1142/9789813239609_0013

DO - 10.1142/9789813239609_0013

M3 - Chapter

AN - SCOPUS:85068112652

SN - 9789813239593

SP - 393

EP - 409

BT - Complexity science

A2 - Peletier, Mark A.

A2 - van Santen, Rutger A.

A2 - Steur, Erik

PB - World Scientific

CY - Singapore

ER -