Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct effect of solvent viscosity on the physical mass transfer for
  wavy film flow in a packed column   The interphase mass transfer plays a critical role in determining the height
of packed column used in absorption process. In a recent experiments2, the
direct impact of viscosity on the physical mass transfer coefficient was
observed to be higher in a packed column as compared to the wetted wall column.
We offer a plausible mechanism involving the wavy film and eddy enhanced mass
transfer in a packed column to explain underlying physics via analytical and
numerical studies. The analytically derived mass transfer coefficient matches
well with experimental observation in a packed column. The countercurrent flow
simulations in a packed column with both uniform and wavy films also confirm
this behavior. The predicted k_L shows steep variation with for a wavy film
than a uniform film, further confirms the proposed theory. A similar relation
for a wavy film is also observed in theoretical, experimental and numerical
studies.

14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th