Nanoparticles aggregation in nanofluid flow through nanochannels: Insights from molecular dynamic study

Habib Aminfar, Mohammad Ali Jafarizadeh and Nayyer Razmara ()
Additional contact information
Habib Aminfar: Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Mohammad Ali Jafarizadeh: Faculty of Physics, University of Tabriz, Tabriz, Iran
Nayyer Razmara: Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran

International Journal of Modern Physics C (IJMPC), 2014, vol. 25, issue 11, 1-23

Abstract: This paper deals with the molecular dynamics simulation (MDS) of nanofluid under Poiseuille flow in a model nanochannel. The nanofluid is created by exerting four solid nanoparticles dispersed in Argon (Ar), as base fluid, between two parallel solid walls. The flow is simulated by molecules with the Lennard-Jones (LJ) intermolecular potential function. Different simulations are done with two different types of solid particles and two cut-off radii. In each case, Copper (Cu) and Platinum (Pt) LJ parameters are applied for the nanoparticles and solid walls particles with cut-off ratios of 2.2σ and 2.5σ. The microstructure of the system at different time steps is investigated to describe the aggregation kinetics of nanofluid on Poiseuille flow. When a few nanoparticles or a cluster of them reach each other, they stick together and the interaction surface of the solid–fluid interface reduces, so the potential energy of the system decreases at these time steps. Therefore, the system enthalpy reduces at the aggregation time steps. Results show that the simulations with cut-off radius 2.5σ indicate minimum clustering effect at the same time. Based on the obtained results, the system withCunanoparticles makes it to aggregate later than that ofPtnanoparticles which is due to differences in potential interaction of two materials. The new simulation results enhance our understanding of cluster morphology and aggregation mechanisms.

Keywords: Aggregation; cluster; molecular dynamics simulation; nanoparticles; Poiseuille (search for similar items in EconPapers)
Date: 2014
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0129183114500661
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:ijmpcx:v:25:y:2014:i:11:n:s0129183114500661

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0129183114500661

Access Statistics for this article

International Journal of Modern Physics C (IJMPC) is currently edited by H. J. Herrmann

More articles in International Journal of Modern Physics C (IJMPC) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().