Alexandria Engineering Journal,
Journal Year:
2022,
Volume and Issue:
63, P. 415 - 426
Published: Aug. 5, 2022
The
natural
convection
through
a
partitioned
circular
enclosure
by
deformable
middle
wall
was
analyzed.
To
solve
the
FSI
problem,
forceful
connection
between
fluid
and
flexible
established.
In
order
to
problem
under
consideration,
Arbitrary
Lagrangian-Eulerian
(ALE)
perspective
utilized.
finite
element
method
(FEM),
also
unilized
in
solving
set
of
model
equations.
Effect
Angle
(30
≤
η
90),
flexibility
(0.71
Eτ
200),
Position
heat
source
sink
(-60
α
+60)
has
been
studied
within
enclosure.
results
indicate
that
reduction
reduces
force
(stress)
applied
as
well
average
Nusselt
number
some
extent.
Also,
Increased
angle
leads
an
enhancement
Nu.
maximum
stress
distortion
occur
at
specific
positions
hot
cold
sector,
buoyancy
and,
therefore,
strength
flow
are
higher,
causing
transfer
rate
increase.
For
number,
A
decrease
8.5
%
for
=
90°
reported
compared
30°.
−60°
is
up
124.5
higher
than
60°.
Physical Review Letters,
Journal Year:
2019,
Volume and Issue:
123(20)
Published: Nov. 12, 2019
Using
a
geometric
feedback
model
of
the
flagellar
axoneme
accounting
for
dynein
motor
kinetics,
we
study
elastohydrodynamic
phase
synchronization
in
pair
spontaneously
beating
filaments
with
waveforms
ranging
from
sperm
to
cilia
and
Chlamydomonas.
Our
computations
reveal
that
both
in-phase
anti-phase
synchrony
can
emerge
asymmetric
beats
while
symmetric
go
in-phase,
elucidate
mechanism
slips
due
biochemical
noise.
Model
predictions
agree
recent
experiments
illuminate
crucial
roles
hydrodynamics
mechanochemical
synchronization.
Science Advances,
Journal Year:
2022,
Volume and Issue:
8(23)
Published: June 8, 2022
The
convective
transport
rate
of
polymers
through
confined
geometries
depends
on
their
size,
allowing
for
size-based
separation
polymer
mixtures
(chromatography).
Here,
we
investigate
whether
active
can
be
separated
in
a
similar
manner
based
activity.
We
use
thin,
living
Tubifex
tubifex
worms
as
model
system
and
study
the
these
by
an
imposed
flow
channel
filled
with
hexagonal
pillar
array.
strongly
degree
activity,
effect
that
assign
to
different
distribution
conformations
sampled
depending
Our
results
demonstrate
unique
way
sort
activity
provide
versatile
convenient
experimental
hydrodynamics
polymers.
Journal of Fluid Mechanics,
Journal Year:
2023,
Volume and Issue:
955
Published: Jan. 19, 2023
The
fluid–structure
interactions
between
flexible
fibres
and
viscous
flows
play
an
essential
role
in
various
biological
phenomena,
medical
problems
industrial
processes.
Of
particular
interest
is
the
case
of
particles
transported
freely
time-dependent
flows.
This
work
elucidates
dynamics
morphologies
actin
filaments
under
oscillatory
shear
by
combining
microfluidic
experiments,
numerical
simulations
theoretical
modelling.
Our
reveals
that,
contrast
to
steady
flows,
which
small
orientational
fluctuations
from
a
flow-aligned
state
initiate
tumbling
deformations,
periodic
flow
reversal
allows
filament
explore
many
different
configurations
at
beginning
each
cycle.
Investigation
motion
during
half
time
periods
oscillation
highlights
critical
initial
orientation
on
emergent
dynamics.
strong
coupling
deformation
results
new
regimes
novel
higher-order
buckling
modes
absent
primary
outcome
our
analysis
possibility
suppression
instabilities
for
certain
combinations
frequency
orientation,
even
very
We
explain
this
unusual
behaviour
through
weakly
nonlinear
Landau
theory
buckling,
we
treat
as
inextensible
Brownian
Euler–Bernoulli
rods
whose
hydrodynamics
described
local
slender-body
theory.
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(11)
Published: March 4, 2024
Enzymatic
reactions
in
solution
drive
the
convection
of
confined
fluids
throughout
enclosing
chambers
and
thereby
couple
processes
reaction
convection.
In
these
systems,
energy
released
from
chemical
generates
a
force,
which
propels
fluids’
spontaneous
motion.
Here,
we
use
theoretical
computational
modeling
to
determine
how
reaction-convection
can
be
harnessed
tailor
control
dynamic
behavior
soft
matter
immersed
solution.
Our
model
system
encompasses
an
array
surface-anchored,
flexible
posts
millimeter-sized,
fluid-filled
chamber.
Selected
are
coated
with
enzymes,
react
dissolved
chemicals
produce
buoyancy-driven
fluid
flows.
We
show
that
chemically
generated
flows
exert
force
on
both
(active)
passive
thus
regular,
self-organized
patterns.
Due
specificity
enzymatic
reactions,
display
controllable
kaleidoscopic
where
one
regular
pattern
is
smoothly
morphed
into
another
addition
certain
reactants.
These
spatiotemporal
patterns
also
form
“fingerprints”
distinctly
characterize
system,
reflecting
type
enzymes
used,
placement
enzyme-coated
posts,
height
chamber,
bending
modulus
elastic
posts.
The
results
reveal
provides
concepts
for
designing
readily
switches
among
multiple
morphologies.
This
enables
microfluidic
devices
spontaneously
reconfigured
specific
applications
without
construction
new
fabrication
standalone
sensors
operate
extraneous
power
sources.
