Enhanced fully resolved CFD-DEM-PBFM simulation of non-spherical particle–fluid interactions during hydraulic collection
Computer Methods in Applied Mechanics and Engineering,
Год журнала:
2024,
Номер
426, С. 116994 - 116994
Опубликована: Апрель 24, 2024
Язык: Английский
Computational fluid–structure interaction in biology and soft robots: A review
Physics of Fluids,
Год журнала:
2024,
Номер
36(10)
Опубликована: Окт. 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.
Язык: Английский
Evaluating the Safety of Spillway Structures in Concrete Gravity Dams: A Comprehensive Risk Analysis Under Diverse Loads
Journal of The Institution of Engineers (India) Series A,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
Язык: Английский
Micro-macro analysis of the uplift behavior of the suction anchor in clay based on the CFD-DEM coupling model
Computers and Geotechnics,
Год журнала:
2024,
Номер
174, С. 106624 - 106624
Опубликована: Июль 31, 2024
Язык: Английский
Dynamic characteristic comparison between pressure fluctuations coupling with a moving part model of a liquid rocket engine flow regulator
Physics of Fluids,
Год журнала:
2024,
Номер
36(11)
Опубликована: Ноя. 1, 2024
The
rapid
development
of
space
launch
vehicle
has
put
forward
increasingly
strict
requirements
for
engine
startup
characteristics
and
thrust
regulation
capabilities.
flow
regulator
is
a
critical
component
in
the
operation
liquid
rocket
engines,
particularly
due
to
its
role
precise
control
self-adaptation
perturbations.
This
study
focuses
on
complex
fluid–structure
interaction
phenomena
present
regulators.
A
three-dimensional
(3D)
transient
numerical
model
was
constructed
using
computational
fluid
dynamics
dynamic
grid
methods
investigate
response
mechanism
under
various
disturbances.
After
experimental
verification,
error
less
than
3%.
results
demonstrate
that
sinusoidal
pressure
perturbations
(10–50
Hz),
oscillation
frequency
amplitude
are
directly
proportional
perturbation
frequency.
step
approximately
linearly
related
amount
mass
rate
overshoot.
There
existed
an
inverse
relationship
between
vortex
size
intensity
magnitude
inlet
field
closely
coupled
with
rate,
post-perturbation
recovery
depends
restoration
field.
Furthermore,
existence
friction
will
cause
sliding
sleeve
experience
stagnation
phase,
greater
friction,
longer
phase.
These
findings
provide
valuable
insight
into
intricate
regulators
contribute
design
optimization
future
engines.
Язык: Английский
Enhancing the Proportion of Sub-5 μm Atomized Droplet Size in Medical Air-Compression Nebulizer
Symmetry,
Год журнала:
2024,
Номер
17(1), С. 6 - 6
Опубликована: Дек. 24, 2024
Medical
air-compression
nebulizers
deliver
atomized
medication
to
the
lungs,
providing
rapid
and
painless
treatment
for
respiratory
diseases.
However,
size
of
most
droplets
is
around
10
μm,
limiting
drug
deposition
in
lower
airways
alveoli,
with
increasing
proportion
sub-5
μm
remaining
challenging.
In
this
work,
finite
element
analysis
was
employed
model
effects
gas
flow
rate,
liquid
channel
width,
broken
baffle
structure
on
droplet
distribution,
aiming
optimize
symmetrical
parameters
operating
conditions.
A
novel
compression
atomizer
developed
experimentally
evaluated,
incorporating
an
improved
crushing
baffle.
Following
modification,
increased
from
54.6%
59.25%,
representing
a
4.65%
enhancement
generation
droplets.
The
rate
concentration
distribution
were
systematically
investigated
further
atomization
performance.
results
demonstrated
significant
increase
droplets,
thereby
enhancing
delivery
efficiency
tract
improving
efficacy
Язык: Английский
Research on the multiphase flow in a sludge concentrated tank and its structural optimization
AQUA - Water Infrastructure Ecosystems and Society,
Год журнала:
2024,
Номер
73(6), С. 1257 - 1276
Опубликована: Май 22, 2024
ABSTRACT
This
study
primarily
discusses
the
influence
of
internal
structure
on
performance
sludge
concentrators.
The
focus
is
to
evaluate
structural
changes
improvement
settling
and
clarifying
efficiency
through
numerical
simulation,
so
as
achieve
optimal
design
equipment
parameters.
results
show
that
with
increase
bottom
outlet
width
cone
guide
blade,
turbulence
decreases,
thickening
significantly
increased
by
about
27.1%,
from
0.01036
at
300
mm
0.0132
500
mm,
which
improves
efficiency.
Also,
addition
extended
deflector
concentration
0.0129
0.0134
3.87%
reduced
suspended
matter
13.6%.
Obviously,
effluent
diversion
length
water
purification
cannot
be
ignored.
Therefore,
an
takes
into
account
critical
quality
in
concentrator.
These
findings
provide
theoretical
insights
for
improving
thickeners
treatment.
Язык: Английский