Springer series on naval architecture, marine engineering, shipbuilding and shipping/Springer series on naval architecture, marine engineering, shipbuildung and shipping,
Год журнала:
2024,
Номер
unknown, С. 595 - 616
With
the
micro-miniaturization
of
offshore
wireless
sensors,
signal
lights,
and
other
devices
emergence
problem
self-powering
in
distant
sea,
how
to
harvest
energy
from
low-speed
currents
has
become
a
hot
spot
research
nowadays.
To
improve
output
power
conversion
efficiency
water
flow,
we
propose
vertical
cantilever
beam
circular
cylinders
fitted
with
rigid
splitter
plate
piezoelectric
harvester
(CSPPEH).
In
this
paper,
influence
length
attack
angle
on
CSPPEH
been
experimentally
investigated.
The
vibration
response
mechanism
involving
mutual
transition
between
vortex-induced
galloping
was
analyzed
through
particle
image
velocimetry
flow
field
visualization.
experimental
results
indicate
that
characteristics
increase
initially
then
decrease
plates
(L/D
=
0–2.4)
at
0°,
which
can
be
explained
by
theoretical
model
harvester.
It
is
found
optimal
occur
1.40D
an
90°.
maximum
values
for
amplitude,
swing
angle,
voltage,
power,
density
are
4.96D,
21.7°,
42.68
V,
910.81
μW,
1.94
mW/cm3,
respectively.
Efficiency
up
2.2%
0.4D
90°
plate.
Compared
bare
cylinder
harvester,
significantly
improved.
demonstration
continuous
charging
discharging
capacitors
light
emitting
diode
lights
performed
show
practicability
designed
CSPPEH.
Overall,
present
study
enables
applications
realizing
self-powered
sensing
under
low-water-speed
environments.
