Computational fluid–structure interaction in biology and soft robots: A review
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(10)
Published: Oct. 1, 2024
The
omnipresence
of
fluid–structure
interaction
(FSI)
in
biological
systems
is
indisputable—from
the
vibration
leaves
to
locomotion
fish,
flying
birds,
and
cardiovascular
biomechanics;
FSI
indeed
ubiquitous.
Even
stimuli-responsive
soft
robots
that
typically
operate
inside
a
fluid
medium,
these
physical
interactions
are
prevalent.
Therefore,
it
becomes
mandatory
have
thorough
understanding
their
fully
coupled
physics
involving
strong
two-way
between
solid
domains.
Although
state-of-the-art
computational
frameworks
robust
numerical
techniques
been
developed
study
complex
mechanisms
associated
nonlinearities
multiple
spatiotemporal
scales,
we
believe
timely
review
current
development,
emerging
techniques,
future
challenges
would
further
stimulate
research
along
this
direction.
explore
broad
landscape
myriad
avenues
herald
emphasizing
manifold
occurrences
biology
advanced
robotic
technologies,
while
underlining
plethora
adopted
fundamental
phenomena.
Language: Английский
A partitioned based algorithm for cohesive crack simulations subjected to fluid–structure interaction effects
Gong Chen,
No information about this author
Zhen Yue,
No information about this author
Yifang Qin
No information about this author
et al.
Ocean Engineering,
Journal Year:
2025,
Volume and Issue:
322, P. 120528 - 120528
Published: Feb. 4, 2025
Language: Английский
A CFD-FEM-IBM simulation scheme for the strong coupling between the fluid and the structure with large deformations and movements
Jia Mao,
No information about this author
Li Feng,
No information about this author
Shuhe Wang
No information about this author
et al.
Computers & Structures,
Journal Year:
2025,
Volume and Issue:
310, P. 107673 - 107673
Published: Feb. 18, 2025
Language: Английский
The Cahn–Hilliard–Navier–Stokes framework for multiphase fluid flows: laminar, turbulent and active
Journal of Fluid Mechanics,
Journal Year:
2025,
Volume and Issue:
1010
Published: May 5, 2025
The
Cahn–Hilliard–Navier–Stokes
(CHNS)
partial
differential
equations
(PDEs)
provide
a
powerful
framework
for
the
study
of
statistical
mechanics
and
fluid
dynamics
multiphase
fluids.
We
an
introduction
to
equilibrium
non-equilibrium
systems
in
which
coexisting
phases,
distinguished
from
each
other
by
scalar
order
parameters,
are
separated
interface.
then
introduce
coupled
CHNS
PDEs
two
immiscible
fluids
generalisations
(i)
phases
with
different
viscosities,
(ii)
gravity,
(iii)
three-component
(iv)
active
discuss
mathematical
issues
regularity
solutions
PDEs.
Finally
we
survey
rich
variety
results
that
have
been
obtained
numerical
studies
CHNS-type
diverse
systems,
including
bubbles
turbulent
flows,
antibubbles,
droplet
liquid-lens
mergers,
turbulence
active-CHNS
model
its
generalisation
can
lead
self-propelled
droplet.
Language: Английский
Exploring the Role of Filaments in Channel Flow Modification Using the Immersed Boundary Lattice Boltzmann Method
Flow Measurement and Instrumentation,
Journal Year:
2025,
Volume and Issue:
unknown, P. 102952 - 102952
Published: June 1, 2025
Language: Английский
Experimental and numerical investigations to the aeroelastic response of flexible thin airfoil
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(6)
Published: June 1, 2024
The
paper
investigates
the
phenomenon
of
aeroelastic
response
flexible
thin
airfoils
under
various
angles
attack
(AOAs)
and
flow
velocities
through
wind
tunnel
experiments
numerical
simulations.
vibration
modal
characteristics
are
explored,
including
frequencies,
amplitudes,
transition,
instantaneous
characteristics.
Vibration
is
directly
measured
using
non-contact
laser
sensors,
model
appropriately
configured
to
simulate
fluid–structure
interaction
(FSI)
problem
large
deformation.
Experiments
cover
a
range
AOAs
(1°–20°)
incoming
(from
10
73
m/s),
with
dynamic
responses
four
sensors.
Both
average
features
analyzed,
revealing
multi-modal
as
velocity
AOA
increase.
mode
transitions
from
pure
bending
higher-order
modes
increases.
Specifically,
at
higher
increased
AOA,
high-order
component
shifts
bending-torsional
coupled
pure-torsional
mode.
Comparison
frequencies
between
experimental
measurements
finite
element
method
simulations
highlights
significant
shifts,
particularly
in
Furthermore,
employing
commercial
software
ANSYS
CFX
Mechanical,
two-way
three-dimensional
FSI
successfully
replicates
flutter
boundaries
observed
experimentally
1°
approximately
m/s.
This
extended
vibrations
15°
yielding
insights
into
phenomena
contributing
this
AOA.
An
explanation
provided
for
based
on
above
insight.
Finally,
differences
speculated
upon.
Language: Английский
Influence of wall thickness on the rupture risk of a patient-specific cerebral aneurysm: A fluid–structure interaction study
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(9)
Published: Sept. 1, 2024
Cerebral
aneurysms
are
the
bulges
in
arteries
that
have
potential
to
rupture,
as
thin-walled
regions
of
an
aneurysm
more
vulnerable.
Understanding
correlation
between
wall
thickness
and
corresponding
stresses
can
facilitate
better
prediction
using
fluid–structure
interaction
tools.
However,
obtaining
actual
vivo
variation
dome
neck
is
vital
for
accurate
stresses.
Invasive
methods
abnormal
artery
may
further
aggravate
rupture
risk
these
aneurysms.
Modeling
aneurysmal
reconstruction,
closer
conditions
from
histopathological
slices,
apt
approach
follow.
To
this
end,
present
study
performs
a
comparative
assessment
uniform,
variable,
patient-specific
on
hemodynamic
biomechanical
Simulations
show
maximum
13.6,
27.6,
48.4
kPa,
respectively.
The
displacements
were
observed
be
58.5,
126,
162
μm,
It
uniform
model
conservative
underestimates
displacements.
Thinner
experience
higher
stress
same
internal
pressure
than
thicker
regions,
indicating
susceptible
rupture.
generation
variable
was
approach,
information
only
retrospective
current
scientific
scenario.
Language: Английский
Flow topology and mixing in alveolar edema: Unsteady flow in interconnected cavities with moving walls
Jun Dong,
No information about this author
Huimin Lv,
No information about this author
Chengyue Wang
No information about this author
et al.
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(10)
Published: Oct. 1, 2024
The
study
of
alveolar
fluid
mechanics
is
critical
for
comprehending
respiratory
function
and
lung
diseases,
particularly
in
cases
lesions
that
result
significant
structural
dynamic
changes.
This
investigates
the
flow
topology
chaotic
mixing
within
both
normal
edematous
alveoli,
where
alveoli
model
are
interconnected
by
pores.
To
numerically
simulate
flow,
a
mathematical
developed
to
ascertain
key
parameters
Reynolds
number
(Re)
expansion
ratio.
Subsequently,
fields
analyzed
determine
wall
shear
stress
(WSS)
identify
WSS
points
velocity
vector,
with
thorough
presentation
various
topologies
corresponding
these
points.
Moreover,
mode
decomposition-based
method
introduced
track
particle
trajectories,
exploration
conducted
through
tracer
advection,
Poincare
map,
calculation
finite-time
Lyapunov
exponents.
Results
indicate
exhibits
higher
Re
due
properties.
Within
high
usually
localized
at
pores
increase
alter
topologies,
significantly
changing
mixing.
Additionally,
locations
also
affect
patterns.
These
findings
crucial
understanding
physiology
designing
inhaled
drugs
considering
role
chaos
transport
acini.
Language: Английский
Investigating the effect of finite ionic size and solvent polarization on induced charge electro-osmosis around a perfectly polarizable cylinder
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(11)
Published: Nov. 1, 2024
Many
industrially
relevant
microfluidic
applications
use
concentrated
solutions
of
macro-molecular
solutes
dissolved
in
polar
solvents
like
water,
which
are
typically
deployed
at
high
voltages.
In
this
study,
we
investigate
the
effect
finite
ionic
sizes
and
solvent
polarization
on
induced
charge
electro-osmotic
flow
around
a
perfectly
polarizable
cylinder,
electric
field
strengths
concentrations.
The
is
actuated
by
means
direct
current
field,
step
response
various
parameters
studied
numerically.
Finite
sizes,
defined
through
steric
factor
ν,
modeled
using
modified
Poisson–Nernst–Planck
model.
Additionally,
field-dependent
permittivity,
characterized
number
A,
accounts
for
molecular
re-orientation
effects.
Our
findings
reveal
an
ion-size
modulated
decrement
concentration
electrical
double
layer
augmentation
field.
Remarkably,
resulting
velocities
increase
with
ion
size.
Solvent
polarization,
other
hand,
results
marked
reduction
velocities.
Steric
effects,
however,
dominate
over
large
range
parameter
space
(applied
voltage
bulk
concentration)
as
compared
to
polarization.
Finally,
demonstrate
that
unequal
result
asymmetries
steady-state,
thereby
generating
net
electro-phoretic
motion
suspended
particles.
Language: Английский