Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterization of Folding and Stretching in Mixing Enhancements   This research paper presents a 2D numerical model of an electrokinetic
T-junction micromixer based on the stretching and folding theory presented by
Ottino. Particle deformation was considered by simulating 2 $\mu m$ massless
particles as 8-point square cells. Furthermore, stretching and folding
definitions are proposed, compatible with a Lagrangian particle approach.
Moreover, mixing homogeneity and consistency were measured in a 200 $\mu m$
square region of interest neighboring the outlet. Statistical analysis of the
exiting mixing homogeneity at four different electric field conditions (93.5
V/cm, 109.8 V/cm, 126 V/cm and 117.9 V/cm, corresponding to a 23V, 27V, 29V and
31V potential difference) show that mixing consistency and homogeneity are not
always increased with a higher electric field intensity, even after
electrokinetic instabilities are formed, as increasingly unstable flow
conditions decrease the ratio of folding to stretching ($m$), hindering the
interaction between substances. Finally, an optimal proportion of stretching to
folding was found for maximizing mixing efficiency at $m =0.0045$.

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The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn