Paper Info
Title
The Effect of Inertia on the Flow and Mixing Characteristics of a Chaotic Serpentine Mixer.
Abstract
As an extension of our previous study, the flow and mixing characteristics of a serpentine mixer in non-creeping flow conditions are investigated numerically. A periodic velocity field is obtained for each spatially periodic channel with the Reynolds number ( Re) ranging from 0.1 to 70 and the channel aspect ratio from 0.25 to one. The flow kinematics is visualized by plotting the manifold of the deforming interface between two fluids. The progress of mixing affected by the Reynolds number and the channel geometry is characterized by a measure of mixing, the intensity of segregation, calculated using the concentration distribution. A mixer with a lower aspect ratio, which is a poor mixer in the creeping flow regime, turns out to be an efficient one above a threshold value of the Reynolds number, Re = 50. This is due to the combined effect of the enhanced rotational motion of fluid particles and back flows near the bends of the channel driven by inertia. As for a mixer with a higher aspect ratio, the intensity of segregation has its maximum around Re = 30, implying that inertia does not always have a positive influence on mixing in this mixer.
Year
DOI
Venue
2014
10.3390/mi5041270
MICROMACHINES
Keywords
Field
DocType
chaotic mixing,micromixer,serpentine channel,numerical simulation
Micromixer,Reynolds number,Vector field,Flow (psychology),Rotation around a fixed axis,Electronic engineering,Chaotic mixing,Inertia,Materials science,Stokes flow
Journal
Volume
Issue
ISSN
5
4
2072-666X
Citations 
PageRank 
References 
1
0.40
1
Authors
2
Name
Order
Citations
PageRank
Tae Gon Kang122.30
Patrick D. Anderson2206.99