Numerical simulation of nanoparticles diffusion and coagulation in a twin-jet via a TEMOM method
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 29 July 2014
Abstract
Purpose
The purpose of this paper is to study nanoparticles diffusion and coagulation processes in a twin-jet.
Design/methodology/approach
Large eddy simulation (LES) and Taylor-series expansion moment method (TEMOM) are employed to deal with a nanoparticle-laden twin-jet flow.
Findings
The numerical results show that the interaction of the two jets and turbulence eddy structures rolling-up, paring and shedding in flow sharply affects particles number concentration. Particle diameter grows quickly at the interfaces of jets. Coagulation shows more obvious effect at initial stage than that in the subsequent period. Then diffusion makes the particle diameter distribution much more uniform.
Originality/value
In recent years a great number of attentions have been focussed on the issue of particulate dynamics processes including diffusion, coagulation and deposition, etc. However, up to now few works have been focus on the nanoparticles coagulation and dispersion in turbulent flows. The investigation on the diffusion and coagulation process of nanoparticles using TEMOM in a twin-jet flow has not been found.
Keywords
Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No.: 11132008) and the Natural Science Foundation of Zhejiang Province (Y6110170).
Citation
Yin, Z. and Liu, H. (2014), "Numerical simulation of nanoparticles diffusion and coagulation in a twin-jet via a TEMOM method", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 24 No. 6, pp. 1312-1320. https://doi.org/10.1108/HFF-04-2013-0143
Publisher
:Emerald Group Publishing Limited
Copyright © 2014, Emerald Group Publishing Limited