Jurnal Ilmiah Teknologi Infomasi Terapan,
Journal Year:
2023,
Volume and Issue:
10(1)
Published: Dec. 19, 2023
Jet
Dyeing
Machine
is
a
machine
used
in
the
textile
industry
to
dye
fabric
materials
with
efficiency
and
large-scale
production
capacity.
PT
XXX
faces
high
frequency
of
damage
total
lost
time
on
several
components
machines,
so
proper
maintenance
accordance
standards
needs
be
carried
out
reduce
extend
service
life
components.
The
CPM
approach
can
help
creating
an
effective
schedule
that
run
smoothly
efficiently.
This
study
aims
plan
schedules
preventive
machines
at
using
approach.
results
analysis
show
routine
very
important
have
impact
losses.
must
considered
carefully
as
not
interfere
performance
personnel
adequate
knowledge
skills
carry
properly
established
SOP.
Total
losses
due
wasted
reduced
by
24%
from
original.
Repair
replacement
often
experience
need
done
machines.
Physics of Fluids,
Journal Year:
2025,
Volume and Issue:
37(1)
Published: Jan. 1, 2025
In
the
present
work,
a
proper
orthogonal
decomposition
(POD)
analysis
is
conducted
for
synthetic
jet
array
(SJ
array)
to
qualitatively
and
quantitatively
investigate
influence
of
vectoring
resulting
from
phase
difference
(∅)
between
actuators
on
distribution
kinetic
energy
(KE)
among
vortices
their
oscillating
behavior
across
various
modes.
Here,
POD
SJ
operated
at
Strouhal
number
St=0.086
with
different
differences
fixed
Reynolds
Re=300.
The
simulated
cases
were
run
in
OpenFOAM
software,
utilizing
two-dimensional,
incompressible
solver,
k-omega
shear
stress
transport
turbulence
model.
It
has
been
observed
that
increased
enhances
vortex
interactions,
leading
formation
smaller
secondary
vortical
structures
redistribution
KE
toward
higher
Furthermore,
we
60°
90°
(where
maximum
occurs),
within
disperses
evenly
modes,
indicating
enhanced
interactions
more
complex
flow
dynamics.
contrast,
180°,
jets
exhibit
continued
interactive
behavior,
reflecting
intricate
patterns
despite
being
completely
out
one
another.
study
also
reveals
larger
result
requiring
324
modes
capture
actual
∅=180°,
compared
295
∅=0°.
This
highlights
critical
role
controlling
oscillation
vortices,
which
are
essential
optimizing
enhancing
practical
applications,
such
as
targeted
cooling
efficiency
improved
mixing
processes
aerodynamics
thermal
management
systems.
Fundamental and Applied Hydrophysics,
Journal Year:
2025,
Volume and Issue:
17(4), P. 55 - 70
Published: Jan. 10, 2025
The
article
focuses
on
the
study
of
vortex
ring
generation
and
evolution
in
aquatic
environments
resulting
from
discharge
a
water
jet
into
flooded
volume.
It
presents
computational
data
based
well-known
relationships
literature,
as
well
results
simulations
using
newly
developed
methodology.
characteristics
generator
within
experimental
setup,
created
large-scale
hydrophysical
tank,
are
justified.
Experimental
studies
were
conducted
under
conditions
thermal
stratification
medium,
with
temperature
difference
between
tank.
formation
motion
show
good
agreement
data.
influence
tank
was
found
to
be
negligible.
A
significant
effect
dimensionless
length
key
rings
observed,
along
differences
layer
at
horizon
jet,
impacting
rings’
trajectory.
Journal of Fluids Engineering,
Journal Year:
2024,
Volume and Issue:
146(10)
Published: April 3, 2024
Abstract
The
circular
synthetic
jet
(SJ)
for
different
dimensionless
stroke
lengths
and
at
Reynolds
number
Re
=
5000
was
investigated
in
this
paper.
Particle
image
velocimetry
(PIV)
used.
flow
measured
a
distance
of
240
mm
from
the
orifice,
area
divided
into
two
fields
view
(FOV).
parameter
were
created
by
injunction
these
FOVs.
time-averaged
velocity,
turbulent
kinetic
energy
(TKE),
turbulence
intensity,
vorticity
field,
centerline,
profiles
SJ
presented
discussed.
Additionally,
half-width
investigated.
data
discontinuity
line
FOVs
impact
on
parameters
Numerical Heat Transfer Part A Applications,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 23
Published: June 27, 2024
A
two-dimensional,
axisymmetric
numerical
model
is
used
to
study
the
effect
of
synthetic
jet
flow
structure
and
thermal
performance,
validated
with
experimental
data.
The
Reynolds
number
set
at
5473,
orifice-to-surface
spacing
(z/d)
varies
(2,
6,
10).
Three
square
cross-section
ribs
different
radial
positions
are
analyzed.
Results
show
that
reduce
heat
transfer
stagnation
point,
a
maximum
decrease
74.37%
z/d=10
for
5mm×5mm
rib
r/d=0.5
minimum
47.70%
z/d=6
same
rib.
Heat
increases
near
rib's
leading
edge
but
drops
before
after
No
area-averaged
improvement
observed,
reduction
69.24%
r/d=2
2.43%
r/d=1.
Stagnation
pressure
by
24.42%
z/d=2
decreases
15.66%
due
r/d=2.
