Multi-position melting uniformity based on hot-air welding technology: Numerical simulation and experimental studies
International Journal of Thermal Sciences,
Год журнала:
2025,
Номер
211, С. 109722 - 109722
Опубликована: Янв. 21, 2025
Язык: Английский
Multi-objective optimization design and performance evaluation of a novel flexure-based tri-axial servo cutting system
Journal of Manufacturing Processes,
Год журнала:
2022,
Номер
84, С. 1133 - 1149
Опубликована: Ноя. 9, 2022
Язык: Английский
Investigation on flow mechanism and impingement heat transfer performance of combined fluidic oscillators
Thermal Science and Engineering Progress,
Год журнала:
2022,
Номер
37, С. 101564 - 101564
Опубликована: Ноя. 21, 2022
Язык: Английский
Thermal-hydraulic characteristics of FLiBe in annuli with helical wire
International Journal of Mechanical Sciences,
Год журнала:
2022,
Номер
243, С. 108056 - 108056
Опубликована: Дек. 18, 2022
Язык: Английский
CFD analysis of heat transfer enhancement by wall mounted flexible flow modulators in a channel with pulsatile flow
Heliyon,
Год журнала:
2023,
Номер
9(6), С. e16741 - e16741
Опубликована: Май 26, 2023
The
aim
of
the
present
study
is
to
explore
heat
transfer
and
pressure
drop
characteristics
in
a
pulsating
channel
flow
due
wall-mounted
flexible
modulators
(FFM).
Cold
air
fashion
forced
enter
through
having
isothermally
heated
top
bottom
walls
with
one/multiple
FFMs
mounted
on
them.
dynamic
conditions
inflow
are
characterized
by
Reynolds
number,
non-dimensional
pulsation
frequency
amplitude.
Applying
Galerkin
finite
element
method
an
Arbitrary
Lagrangian-Eulerian
(ALE)
framework,
unsteady
problem
has
been
solved.
Flexibility
(10-4
≤
Ca
10-7),
orientation
angle
(60°
θ
120°),
location
FFM(s)
have
considered
this
find
out
best-case
scenario
for
enhancement.
system
analyzed
vorticity
contours
isotherms.
Heat
performance
evaluated
terms
Nusselt
number
variations
across
channel.
Besides,
power
spectrum
analysis
thermal
field
oscillation
along
that
FFM's
motion
induced
performed.
reveals
single
FFM
flexibility
=
10-5
90°
offers
Язык: Английский
Numerical Analysis of Transfer of Heat by Forced Convection in a Wavy Channel
International Journal of Renewable Energy Development,
Год журнала:
2022,
Номер
12(1), С. 155 - 165
Опубликована: Ноя. 5, 2022
Convective
heat
transfer
of
laminar
forced
convection
in
a
wavy
channel
is
studied
this
paper.
Numerical
simulations
the
3D
steady
flow
Newtonian
fluid
and
characteristics
are
obtained
by
finite
element
method.
The
effects
Reynolds
number
(10
≤Re≤1000),
oscillations
(0
≤N≤5)
amplitude
wall
(0.05
≤A≤0.2)
on
have
been
analyzed.
results
show
that
average
Nusselt
elevated
as
raised,
showing
high
intensity
transfer,
result
intensified
inertial
zones
recirculation
close
to
hot
wall.
rate
increases
about
0.28%
with
rise
oscillations.
In
along
surface,
wave
important
factors.
With
an
increment
oscillations,
maximal
value
velocity
elevated,
its
minimal
occurs
when
walls
straight.
impact
dimensionless
temperature
tends
be
stronger
compared
An
increase
improves
0.91%
equal
100.
addition,
500,
grows
1.1%
rising
amplitude.
Язык: Английский
Reducing hot spot temperature through vibrating blade-driven winglets motion: Numerical exploration and experimental validation
Applied Thermal Engineering,
Год журнала:
2024,
Номер
unknown, С. 125315 - 125315
Опубликована: Дек. 1, 2024
Язык: Английский
Unsteady Numerical Investigation on the Sealing Effectiveness and Flow Field in Different Rim Seal Geometries
Aerospace,
Год журнала:
2022,
Номер
9(12), С. 780 - 780
Опубликована: Дек. 1, 2022
A
rim
seal
is
often
used
to
prevent
the
ingress
of
high-temperature
gas
into
turbine
disk
cavity
and
protect
from
damage.
Based
on
overlapping
(Seal-A),
this
paper
proposes
two
more
composite
sealing
structures
(Seal-B
Seal-C)
show
effects
a
deep
in
static
modified
platform
rotating
disk.
Three-dimensional
unsteady
Reynolds-averaged
Navier–Stokes
equations
shear
stress
transfer
(SST)
k-ω
turbulence
model
were
reveal
flow
field
characteristics
efficiency.
The
results
that
rotor–stator
interaction
plays
dominant
role
outlet
pressure,
efficiency
outflow
area
obtained
by
transient
calculation
lower
than
steady-state
calculation.
rise
cooling
air
enhances
reverse
vortex
cavity,
cavity’s
also
improved.
When
ratio
increases
0.6%
1.8%,
at
high
radius
30%.
shape
produces
new
return
part
which
improves
shark
nose
Seal-C
aggravates
but
cavity.
In
general,
compared
with
Seal-A,
Seal-B
increased
13.5%
10%,
respectively,
0.6%.
Язык: Английский