A novel frequency-domain physics-informed neural network for accurate prediction of 3D Spatio-temporal wind fields in wind turbine applications
Applied Energy,
Год журнала:
2025,
Номер
386, С. 125526 - 125526
Опубликована: Фев. 20, 2025
Язык: Английский
Experimental investigation of wind loads on solar arrays with varying row configurations and tilt angles
Renewable Energy,
Год журнала:
2025,
Номер
unknown, С. 122440 - 122440
Опубликована: Янв. 1, 2025
Язык: Английский
Investigation of the influence of different incoming flow conditions on vortex-induced vibration in a 10:1 rectangular section
Physics of Fluids,
Год журнала:
2025,
Номер
37(5)
Опубликована: Май 1, 2025
The
vortex-induced
vibration
of
a
10:1
rectangular
prism
under
various
grid-generated
inflow
conditions
is
investigated
to
understand
the
influence
turbulent
flow.
A
simultaneous
vibration-pressure
test
measures
responses
and
pressure
characteristics
at
angles
attack,
while
fractal
theory
evaluates
regularity
fluctuations.
surface
with
without
are
compared
analyze
impact
flow
forms
on
vibration.
results
show
that
although
mean
coefficient
follows
same
spatial
distribution
in
uniform,
spanwise
uniform
turbulent,
non-uniform
flows,
it
higher
conditions.
Uniform
flows
alter
unilateral
asymmetric
fluctuation
pattern
into
global
suppress
Additionally,
turbulence
enhances
energy
exchange
between
section
airflow.
Язык: Английский
Effective wind fairing combination aerodynamic measures against vortex-induced vibrations of Π-shaped composite bridge decks
Physics of Fluids,
Год журнала:
2025,
Номер
37(3)
Опубликована: Март 1, 2025
Long-span
bridges
with
the
Π-shaped
composite
girder
are
prone
to
significant
vortex-induced
vibrations
(VIVs)
because
of
odious
flow
around
blunt
deck.
In
this
paper,
VIV
performance
a
and
suppression
efficiency
different
shaped
fairings
were
systematically
studied
through
experimental
numerical
approaches.
Severe
VIVs
original
observed
in
wind
tunnel
tests,
installation
lower
central
vertical
stabilizer
(LCVS)
can
reduce
but
cannot
eliminate
it
thoroughly.
Then,
mechanism
triggering
LCVS
was
investigated
computational
fluid
dynamics
dynamic
mesh
technology.
After
that,
eight
designed.
The
fields
fixed
installed
methods.
results
indicate
that
leading-edge
vortex
on
upper
surface
rear-body
generated
at
inclined
web
leeward
fairing
main
causes
VIV.
A
smaller
degree
surface,
horizontal
nose
also
achieve
same
effect.
shedding
characteristics
mainly
influenced
by
length
fairing.
an
effective
fairing-based
aerodynamic
measure
optimal
shape
proposed.
Finally,
proposed
countermeasure
is
verified
experimentally.
Язык: Английский
Numerical prediction of vortex-induced vibrations of a long flexible cylinder with variable cross-sections
International Journal of Mechanical Sciences,
Год журнала:
2025,
Номер
unknown, С. 110176 - 110176
Опубликована: Март 1, 2025
Язык: Английский
Experimental investigation on self-excited vibration and wake interference effects of flexible photovoltaic systems
Journal of Wind Engineering and Industrial Aerodynamics,
Год журнала:
2025,
Номер
262, С. 106098 - 106098
Опубликована: Апрель 8, 2025
Язык: Английский
Estimation of amplitude-dependent aerodynamic damping of crosswind-excited flexible structures using square-root cubature Kalman filter with the Sage-Husa estimator
Engineering Structures,
Год журнала:
2025,
Номер
334, С. 120308 - 120308
Опубликована: Апрель 14, 2025
Язык: Английский
Suppression efficiency of the maintenance rail position and guide vanes on vortex-induced vibrations of a streamlined closed-box girder
Physics of Fluids,
Год журнала:
2025,
Номер
37(4)
Опубликована: Апрель 1, 2025
The
vortex-induced
vibration
(VIV)
of
the
streamlined
closed-box
girder
is
greatly
affected
by
attachments.
Herein,
VIV
performance
and
suppression
measures
a
with
an
aspect
ratio
12.425
are
investigated
through
1:25
scale
section
model
wind
tunnel
tests
numerical
simulations.
Severe
torsional
VIVs
at
0°
+5°
attack
angles
observed
in
tests.
Subsequently,
triggering
mechanism
explored
computational
fluid
dynamics
(CFD)
method
dynamic
mesh
technology.
Furthermore,
it
pointed
out
that
measure
design
should
focus
on
maintenance
rail.
After
that,
influence
rail
position
installing
guide
vanes
beside
rails
systematically,
studied
CFD
method.
results
show
leading-edge
vortex
above
wake
under
inclined
web
cause
VIV,
former
plays
major
role.
Moving
inward
dual-side
or
inside
can
reduce
VIV.
These
two
share
common
mechanism:
reducing
while
eliminating
web.
Finally,
optimal
setting
l/Wb
=
1/10
proposed.
Язык: Английский