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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 4    April 2016

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CFD study of flow-diffusion process in Y-shape micromixer
CHEN Zhuo(陈卓), ZHANG Rui-qi(张睿琦), WANG Xiao-na(王晓娜)

School of Energy Science and Engineering, Central South University, Changsha 410083, China

Abstract:A CFD simulation was carried out to investigate the mixing process in a Y-shape micromixer with the software Fluent 6.3. The definition of the “diffusion angle” is proposed to describe the molecular diffusion process associated with the flow at low Reynolds number. The linear relationship between the diffusion angle and the Peclet number (Pe) is determined by both theoretical analysis and numerical simulation. Moreover, the simulation results reveal that the diffusion angle is only related to the Peclet number whilst it is irrelevant to the changes of Re (Reynolds number) and Sc (Schmidt number).The range of Peclet number and Reynolds number for experimental measurement are also suggested as Pe≤10000 and Re≤10.

 

Key words: simulation; flow-diffusion process; molecular diffusion; Y-shape micromixer

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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