A novel liquid–gas–solid computational fluid dynamics-discrete element method-volume of fluid coupling method with compressible fluid phases
Physics of Fluids,
Год журнала:
2025,
Номер
37(4)
Опубликована: Апрель 1, 2025
Traditional
computational
fluid
dynamics
(CFD)-discrete
element
method
(DEM)-volume
of
(VOF)
three-phase
coupling
methods
may
produce
inaccurate
results
in
certain
scenarios
due
to
the
assumption
incompressible
liquid
and
gas
phases.
In
this
study,
a
novel
CFD-DEM-VOF
is
proposed,
which
integrates
unified
equation
state
account
for
compressibility
both
The
α
transport
derived,
fractional
step
proposed
solving
equation.
Additionally,
continuity
incorporating
coefficients
derived
used
influence
during
pressure
correction.
algorithm
validated
through
simulations
three
classic
cases:
single
particle
entering
water
from
air,
dam
break,
entry
block.
Moreover,
unsaturated
soil
loading
problems
are
investigated
using
method.
indicate
that
liquid–gas
interface
begins
rise
only
when
deep
soil,
saturated
with
liquid,
experiences
significant
disturbance.
A
comparison
excess
pore
movement
velocities
particles
two
monitoring
mesh
layers
below
initial
level
reflects
spatial
response
patterns
under
external
loading.
Finally,
coefficient
discussed.
Язык: Английский
A discrete element solution method embedded within a Neural Network
Powder Technology,
Год журнала:
2024,
Номер
unknown, С. 120258 - 120258
Опубликована: Сен. 1, 2024
Язык: Английский
Investigation on the responses of geotechnical materials to unloading and seepage based on the CFD-DEM coupling method
Computers and Geotechnics,
Год журнала:
2024,
Номер
175, С. 106709 - 106709
Опубликована: Сен. 2, 2024
Язык: Английский
A numerical H Darrieus hydrokinetic turbine performance assessment with the application of openings in blade geometry
International Journal of Renewable Energy Development,
Год журнала:
2024,
Номер
14(1), С. 1 - 9
Опубликована: Ноя. 7, 2024
This
study
explores
the
impact
of
various
geometric
modifications,
including
leading-edge
openings,
trailing-
edge
and
circular
on
performance
H
Darrieus
hydrokinetic
turbine.
These
modifications
involved
removal
material
from
a
symmetrical
NACA0018
airfoil
along
its
surface.
The
leading
trailing
openings
extended
lower
to
upper
surface
blade,
while
opening
was
applied
exclusively
Using
commercial
software
ANSYS®
V22.2,
turbine
designed,
discretized,
analyzed
through
computational
fluid
dynamics
employing
Realizable
K-e
turbulence
model.
primary
output
variable
measured
torque,
which
power
coefficient
for
each
design
modification
derived,
allowing
calculation
efficiency
in
scenario.
Notably,
configuration
featuring
achieved
highest
at
51.88%
Tip
Speed
Ratio
(TSR)
2.0,
significant
improvement
over
standard
case
had
an
45.16%.
In
contrast,
trailing-edge
resulted
reduced
efficiencies
44.54%
31.19%,
respectively.
enhanced
with
is
attributed
increased
pressure
difference
generated
between
surfaces
surpassing
design.
Язык: Английский