Modeling and simulation of active suspensions containing large numbers of interacting micro-swimmers

Enkeleida Lushi, Charles S. Peskin

Research output: Contribution to journalArticle

Abstract

We present a mathematical model and simulation method to compute the colonial dynamics of micro-swimmers that interact directly and through the fluid they are suspended in. The model uses the stress generated by each self-motile particle for long-range interactions and includes short-range steric effects between particles. The time-step computational cost is O(NlogN + M), with N the total number of mesh points, and M the number of swimmers. This fast method enables us to efficiently simulate many thousands of interacting self-propelling particles in three dimensions and with background flows. We show examples of collective behavior in suspensions of "pusher" and "puller" micro-swimmers. Crown

Original languageEnglish (US)
Pages (from-to)239-248
Number of pages10
JournalComputers and Structures
Volume122
DOIs
StatePublished - Jan 1 2013

    Fingerprint

Keywords

  • Active suspension
  • Cell locomotion
  • Collective behavior
  • Immersed boundary
  • Swimming microorganisms

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modeling and Simulation
  • Materials Science(all)
  • Mechanical Engineering
  • Computer Science Applications

Cite this