Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(12)
Published: Dec. 1, 2024
A
typical
culinary
setting
involves
liquid
condiments
with
different
constitutive
behaviors
stored
in
jars,
bottles,
pitchers,
or
spouts.
In
the
dynamic
kitchen
environment,
handling
these
might
require
pouring,
drizzling,
squeezing,
tapping,
demonstrating
interplay
of
container
geometry,
fluid
properties,
and
expertise.
There
is,
course,
occasional
accidental
toppling.
We
investigate
combined
effects
surface
confinement
dimensions
on
short-time
spilling
pouring
dynamics
a
toppled
cuvette.
While
attesting
to
fact
that
smaller
cuvettes
(which
can
be
termed
as
capillaries
well)
do
not
spontaneously
spill,
larger
exhibit
are
dependent
property,
viscosity,
flow
rheology.
For
Newtonian
liquids,
it
is
observed
determined
largely
by
coupling
viscous
gravity
forces
inducing
non-intuitive
behavior
at
higher
conduit
dimensions.
The
inclusion
rheology
for
non-Newtonian
liquids
soup
makes
only
an
properties
but
also
function
meniscus
retraction
demarcating
“splatter”
three
regimes
“not
spilling,”
“on
verge
“spontaneous
spilling.”
delineate
interactions
leading
motion
provide
mapping
whether
would
spill
if
momentarily
then
immediately
returned
upright
position.
This
study
aids
understanding
fascinating
physics
could
lead
new
kitchen,
biomedical,
industrial
technologies.
Physics of Fluids,
Journal Year:
2025,
Volume and Issue:
37(2)
Published: Feb. 1, 2025
This
work
aims
to
find
the
optimum
value
of
blade
height
ratio
(R)
for
improving
mixing
performance
and
energy
consumption
a
Triple-Blade
Concentric
Double-Helix
Static
Mixer.
In
this
study,
two
fluids
at
different
concentrations
subjected
laminar
flow
conditions
is
numerically
analyzed
by
using
finite
element-based
Computational
Fluid
Dynamics
simulations.
Different
values
R
parameter
are
considered
in
wide
range
Reynolds
numbers
(Re
=
200–1000).
analysis
then
carried
out
an
in-depth
study
R's
effect
on
performance,
strength
segregation,
index,
helicity,
velocity
profile,
pressure
drop,
pumping
power,
efficiency.
The
findings
showed
that
2/3
gave
highest
index
(MI),
with
maximum
0.99
Re
number
600,
which
best
channel.
Helicity
visualization
also
complex
helicity
patterns
increased
vortex
interactions
configuration.
geometry
improvement
MI
about
17.85%
over
Single-Helix
Mixer
(TB-CSH-SM)
0
600.
It
important
mention
increasing
leads
increase
drop
and,
consequently,
consumption.
Although
gives
relatively
higher
than
0,
has
lowest
power
input
but
lower
MI.
investigation
concludes
represents
balanced
solution
since
it
realizes
moderate
hence
suitable
applications
requiring
efficient
compromise
between
quality
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(8)
Published: Aug. 1, 2024
Enhancing
mixing
efficiency
in
microscale
processes
for
sensitive
biomedical,
pharmaceutical,
and
chemical
applications
is
crucial,
particularly
when
operating
under
low-velocity
constraints.
This
study
presents
a
comprehensive
investigation
into
the
impact
of
various
factors
on
microfluidic
within
circular
chamber
micromixer,
utilizing
electroosmotic
principles.
The
governing
equations
are
solved
numerically
using
finite
element
technique-based
solver.
research
examines
effects
microchamber
diameter
(D),
inlet
velocity
(uo),
alternating
current
(AC)
voltage
amplitude
(ϕo),
AC
frequency
(f)
fluid
dynamics.
Several
key
findings
noted
from
this
study.
reduction
decreases
linear
distance
between
cross-reciprocally
placed
microelectrodes,
resulting
increased
electroosmosis
force
efficiency.
specified
range
shows
species
combined
at
appropriate
frequency.
highest
98.84%
achieved
with
following
parameters:
flow
(uo)
150
μm/s,
4
Hz,
500
mV,
20
μm.
At
12
Hz
exceeds
94.66%
across
wide
input
velocities
(100–200
μm/s),
enabling
versatile
control
devices.
nonlinear
interaction
geometry
significantly
contributes
to
enhanced
These
results
demonstrate
potential
optimizing
through
careful
parameter
tuning,
requiring
high
low
rates.
Thus,
provides
valuable
insights
designing
more
effective
systems
scientific
industrial
fields.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: May 14, 2025
Electro-osmotic
micromixers
constitute
a
specialized
class
of
active
that
apply
alternating
current
(AC)
to
electrodes.
This
methodology
promotes
the
formation
vortical
structures
within
fluid
medium,
resulting
in
substantial
increase
mixing
homogeneity.
In
this
study,
geometrical
parameters
electro-osmotic
micromixer,
for
which
two
rigid
baffles
were
implanted
at
entrance,
optimized
using
Taguchi
method
and
response
surface
(RSM).
Data
obtained
through
transient
2D
model,
simulated
COMSOL
software
based
on
finite
element
method.
After
acquiring
geometric
parameters,
index
was
assessed
under
various
conditions,
including
inlet
velocity,
frequency,
voltage,
phase
lag
current.
The
values
first
baffle
angle
([Formula:
see
text]),
second
length
(L),
distance
between
x
direction
(x),
y
direction(y),
chamber
(α)
[Formula:
text]
resulted
10.58%
improvement
process
index.
implementation
improved
by
8%.
Furthermore,
increasing
applied
voltage
from
1
3
V
27%
average
enhancement
A
maximum
99.37%
achieved
lag,
representing
an
20.1%
compared
absence
lag.
reflects
approximate
65%
initial
stage
scenario
without
any
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(12)
Published: Dec. 1, 2024
Nonequilibrium
interface
(NI)
of
miscible
fluids
has
long
been
great
interest;
however,
the
acting
effective
interfacial
tension
and
deformation
rate
suspended
phase
in
a
steady
immiscible
state
(SIS)
have
yet
delineated.
We
investigate
diffusion
complex
with
surrounding
fluid
rectangular
microchannel.
show
here
that
NI
acts
as
moving
osmotic
membrane
maintains
stable
two-phase
flow
at
faster
than
proportional
to
pressure
fluid.
report
for
first
time
within
exhibits
wet
capillary
thinning
(WCT)
behavior
SIS.
demonstrate
either
caused
by
Korteweg
stress
or
elongational
viscosity
is
measurable
from
WCT
behavior,
it
was
shown
be
applicable
polymer
solutions,
animal
blood,
even
pure
water.
Our
findings
provide
new
insight
into
managing
stream
fluids.
The
technique
enables
precise
measurement
small
amount
fluid,
about
size
drop
without
contact
gas
phase,
providing
safe
method
toxic,
reactive
liquid,
infected
biofluids.
