Nanofluid Dynamics of Flexible Polymeric Nanoparticles under Wall Confinement

Samaneh Farokhirad, N. Ramakrishnan, David M. Eckmann, Portonovo S. Ayyaswamy, Ravi Radhakrishnan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Describing the hydrodynamics of nanoparticles in fluid media poses interesting challenges due to the coupling between the Brownian and hydrodynamic forces at the nanoscale. We focus on multiscale formulations of Brownian motion and hydrodynamic interactions (HI) of a single flexible polymeric nanoparticle in confining flows using the Brownian Dynamics method. The nanoparticle is modeled as a self-avoiding freely jointed polymer chain that is subject to Brownian forces, hydrodynamics forces, and repulsive interactions with the confining wall. To accommodate the effect of the wall, the hydrodynamic lift due to the wall is included in the mobility of a bead of the polymer chain which depends on its proximity to the wall. Using the example of a flexible polymeric nanoparticle, we illustrate temporal dynamics pertaining to the colloidal scale as well as the nanoscale.

Original languageEnglish (US)
Article number052401
JournalJournal of Heat Transfer
Volume141
Issue number5
DOIs
StatePublished - May 1 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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