Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(8)
Published: Aug. 1, 2024
The
design
of
the
aquaculture
tank
system
is
important
for
fish
survival,
as
it
directly
affects
behavior
farmed
fish.
To
avoid
violent
liquid
sloshing,
this
study
proposes
a
side-mounted
bracket-shaped
perforated
baffle
and
special
porous
layer
to
explore
their
anti-sloshing
performance.
A
macroscopic
computational
fluid
dynamics
(CFD)
method,
applicable
combined
structure,
developed
by
introducing
volume-averaged
media
theory,
with
corresponding
experimental
tests
conducted.
In
study,
CFD
method
first
achieved
solve
force
on
reasonably
predicting
momentum
flux
through
surface.
microscopic
model
also
established
further
verify
reliability
our
proposed
model.
amplitudes
free
water
surface
sloshing
loads
are
adopted
assess
response.
addition,
an
index
referred
area-weighted-average
velocity
introduced
quantify
kinetic
energy.
Results
reveal
that
reliably
replicates
greatly
improves
efficiency.
Moreover,
high-frequency
component
wave
energy
more
easily
dissipated,
thus
transfer
from
low
frequency
high
resulting
structure
enhances
its
performance,
while
conversely,
performance
weakened;
suppressing
closely
related
filling
depth
excitation
frequency,
which
dominate
components
behavior.
Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Feb. 24, 2023
Abstract
In
order
to
study
the
influence
of
diameter
depth
ratio
square
arc
angle
aquaculture
tank
on
flow
field
and
sewage
discharge
characteristics
in
tank,
a
reduced
physical
model
test
system
with
single-drain
structure
was
established
based
actual
size
recirculating
tank.
Under
conditions
different
positions
inlet
pipe
(single
set
at
wall,
double
opposite
wall),
number
daily
water
cycle
times
(40
times,
60
times),
inflow
(0°,
45°)
other
parameters,
variation
ratios
(2:1~7:1)
(that
is,
length
water)
effect
systematically
analyzed.
The
results
show
that
appropriate
is
key
improve
efficiency
tanks.
smaller
higher
is.
When
tanks
are
2:1~3:1,
good.
3.5:1~4.5:1,
better.
5:1~7:1,
weakened
greatly.
self-purification
capacity
can
be
improved
by
choosing
proper
ratio,
increasing
adjusting
placement
pipes
according
needs.
closely
related
distribution
sewage.
high
uniformity
velocity
conducive
accumulation
And
research
provide
theoretical
basis
reference
for
optimal
design
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 14, 2024
Abstract
To
investigate
the
dynamic
characteristics
of
sewage
collection
in
circular
circulating
water
aquaculture
tank,
this
paper
systematically
studies
influence
flow
rate
Q
jet
pipe,
layout
distance
ratio
d/r
(d
is
between
midpoint
axis
and
nearest
tank
wall,
r
radius
tank),
angle
θ,
structure
etc.
In
field
tests,
a
high-definition
camera
was
used
to
record
distribution
measured
by
an
Acoustic
Doppler
Current
Profiler,
center
quantified.
Meanwhile,
effect
evaluated
comparing
maximum
under
different
working
conditions.
The
evaluation
results
indicated
that
formation
effective
horizontal
circulation
primary
condition
for
accumulation
d/r,
pipe
all
affect
tank.
single-tube
single-hole
mode,
best
result
obtained
at
θ
0°,
1/4,
7
L/s
(hydraulic
retention
time
70
minutes);
when
less
than
L/s,
gathered
near
wall
degree
feed
dispersion
relatively
high.
vertical
porous
better
adjusted
~
9
set
45°,
1/4.
performance
mode
obviously
mode.
Without
major
changes
original
structure,
research
directly
effectively
guide
actual
production
application
reduce
energy
consumption
improve
Qinghai
Lake
Nude
Carp
Rescue
Center.
