Energy harvesting of unequal-height cylindrical FIV considering wind direction
International Journal of Mechanical Sciences,
Год журнала:
2025,
Номер
unknown, С. 110118 - 110118
Опубликована: Март 1, 2025
Язык: Английский
Missing critical mass ratio in VIV of rigidly connected cylinders
International Journal of Mechanical Sciences,
Год журнала:
2025,
Номер
unknown, С. 110236 - 110236
Опубликована: Апрель 1, 2025
Язык: Английский
Vibration‐Based Energy Harvesting From a Two‐Degree‐of‐Freedom Auxetic Beam Element With Variable Stiffness
Wind Energy,
Год журнала:
2025,
Номер
28(7)
Опубликована: Июнь 2, 2025
ABSTRACT
In
this
study,
energy
harvesting
was
carried
out
by
creating
a
piezoelectric‐based
two‐degree‐of‐freedom
aeroelastic
structure.
It
is
aimed
to
obtain
more
gluing
the
piezoelectric
material
on
auxetic
region.
addition,
second
degree
of
freedom
created
connecting
three
thin
rods
between
beam
element
and
flow
disruptor
geometry.
By
changing
number
these
springs,
effects
different
stiffness
values
harvest
structure
were
examined.
As
result
design,
unique
nonlinear
harvester
that
can
be
adapted
resonance
frequencies
with
variable
connection
elements
has
been
developed.
Beam
vibrations
measured
image
processing
method,
its
accuracy
determined
comparing
them
measurements
taken
laser
sensor.
The
equations
motion
system
obtained
using
Lagrange
natural
determined.
experimental
taken,
dynamics
confirmed
performing
numerical
modal
analysis
in
ANSYS
environment.
Model
ensured
open
circuit
voltage
Finally,
resistance
connected
structure,
load
value
would
provide
optimum
power
output
through
Язык: Английский
Enhancing energy harvesting through hybrid bluff body at a predefined angle of attack coupling vortex-induced vibration and galloping
Ocean Engineering,
Год журнала:
2024,
Номер
312, С. 119029 - 119029
Опубликована: Авг. 23, 2024
Язык: Английский
Interference effects on flow-induced oscillation of three tandem cylinders with passive turbulence control
Journal of Offshore Mechanics and Arctic Engineering,
Год журнала:
2024,
Номер
147(2)
Опубликована: Июль 16, 2024
Abstract
The
characteristics
of
flow-induced
oscillation
(FIO)
multiple
tandem
cylinders
with
passive
turbulence
control
(PTC)
change
due
to
interference
between
PTC
cylinders.
Identifying
positive
and
negative
interferences
is
vital
for
designing
marine
structures
involving
on
elastic
supports.
Experiments
a
single
cylinder,
two
three
in
were
conducted
study
the
placing
an
identical
oscillating
cylinder
upstream,
downstream,
both
upstream
downstream.
Critical
parameters
(damping,
stiffness)
Reynolds
number
(Re)
are
varied
tests.
onset
inflow
velocity
reduced
back-to-back
vortex-induced
vibration
(VIV)
galloping
achieved,
when
vicinity
basic
oscillator.
downstream
enhances
FIO
In
VIV
region,
one
more
effective
than
enhancement
improves
lower
stiffness
damping
ratios.
tends
suppress
oscillator
higher
stiffness.
suppression
vigorous
that
opposite
true
region.
When
placed
oscillator,
its
enhanced
whilst
it
suppressed
Язык: Английский