Heat Transfer,
Год журнала:
2024,
Номер
53(8), С. 4169 - 4196
Опубликована: Июль 17, 2024
Abstract
This
work
numerically
explores
the
mixed
convective
heat
transfer
in
an
open
square
enclosure
containing
conducting
fins
fixed
to
heated
vertical
wall.
kind
of
with
has
enormous
potential
due
its
applications
research,
engineering,
and
current
industries.
Therefore,
is
highly
significant
understand
impact
convection.
The
external
flow
enters
from
hole
bottom
wall
leaves
upper
left
isothermally,
are
attached
walls
at
a
uniform
height.
Both
lower
adiabatic,
whereas
right
sidewall
temperature.
non‐dimensional
transport
equations
resolved
by
using
finite
element
method.
study
accomplished
for
wide
control
variables
range,
such
as
Reynolds
number
(50
≤
Re
200),
Richardson's
(0.1
Ri
10),
length
(
L
f
=
0.2,
0.4,
0.6),
size
outlet
opening
W
out
0.1,
0.3),
gaps
between
S
0,
0.45,
0.9).
results
show
that
thermal
performance
meaningfully
affected
parameters.
maximum
minimum
happens
when
position
0)
0.9),
respectively.
improves
raising
,
increasing
fin's
distance
reduces
significantly.
rises
13%
decrease
0.6
0.2
200,
0
improvement
convection
on
Also,
increases
15%
1
9.
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 101980 - 101980
Опубликована: Март 9, 2024
The
present
study
analyzes
on
the
reviews
carried
out
by
previous
researchers
entropy
generation
caused
flow
and
heat
transfer
of
several
composite
nanofluids
subject
to
varieties
geometries
under
influence
constraints
motions.
include
binary
hybrid
ternary
involving
disparate
base
fluids
with
different
suitable
nanoparticles.
considered
are
deformed
surfaces
(stretched/shrunk
sheets,
cylinders,
disks),
channels
cavities.
Several
numerical
techniques
such
as
Runge-Kutta
method
finite
element/difference/volume
methods
implemented
in
investigations.
major
significant
outcome
review
analysis
is
comparison
for
types
nanofluids.
Growth
volume
percentage
nanoparticles
at
a
fixed
mass
rate
enhances
formation.
When
porosity
strength
increases,
irreversible
production
fluid
friction
results
increased
thermal
efficiency
certain
systems
than
magnetic
entropies.
Compared
single
nanofluids,
display
maximum
entropy.
With
increasing
Rayleigh
numbers,
frictional
entropies
ameliorate
significantly
Journal of Science Advanced Materials and Devices,
Год журнала:
2024,
Номер
9(3), С. 100734 - 100734
Опубликована: Май 12, 2024
As
witnessed
worldwide,
a
rapid
growth
in
research
and
creation
of
energy
storage
devices
such
as
supercapacitor
electrodes
that
can
store
deliver
at
very
fast
rate,
provide
high
current
short
duration.
This
article
deals
with
review
on
how
(SC)
electrode
materials
get
developed
from
bio-waste
like
cooked
chicken
bone
waste
(CCBW),
egg
shells,
fish
gills,
fishbone
waste,
biodegradable
non-biodegradable
marine
wastes
plastics,
mangroves,
chitosans,
mussel
shells
which
economic
benefit
for
the
substantiality
technology.
The
synthesis
preparation
involved
study
include
one
step
activation
colloidal
blending
processes.The
characterization
as-prepared
are
carried
out
by
implementing
XRD,
FESEM,
EDS,
FT-IR,
TGA,
TEM,
RAMAN
spectroscopy.
It
is
visualized
possess
carbon
content
porosity
leading
to
greater
specific
surface
area
highly
essential
conductance
SC
electrodes.
Researches
electrochemical
analysis
prepared
using
CV,
GCD,
EIS
techniques
have
been
analyzed.
This
research
deals
with
the
intricate
dynamics
of
double
diffusive
thermogravitational
convection
within
a
convex
U-shaped
porous
chamber
and
sheds
light
on
use
radiative
ternary
hybrid
nanoliquid.
In
this
configuration,
lower
flat
boundary
is
assumed
to
be
thermally
hot
densely
concentrated
while
curved
lateral
boundaries
remain
cold
dilute.
The
other
enclosure
are
kept
under
adiabatic
conditions.
governing
Navier–Stokes
equations
along
thermal
species
effectively
solved
by
employing
higher
order
compact
technique.
developed
in-house
program
has
been
rigorously
verified
against
experimental
computational
benchmark
results.
meticulously
examines
impact
several
pivotal
parameters,
including
Lewis
number
(1≤Le≤20),
buoyancy
ratio
(0≤N≤10),
Darcy
(10−4≤Da≤10−2),
Rayleigh
(104≤Ra≤106),
volumetric
heat
source/sink
coefficient
(−10≤q≤10),
radiation
parameter
(1≤Rd≤5),
aspect
(0.2≤AR≤0.6),
solid
particles
concentration
(0.0≤ϕthnp≤0.04)
nanofluid.
findings
eloquently
portrayed
through
graphical
representations
showcasing
streamlines,
iso-solutals,
isotherms,
dimensionless
Nusselt
(Nuavg)
Sherwood
(Shavg)
parameters.
Our
investigation
demonstrates
that
nanofluid
outperforms
both
mono
nanofluids
in
facilitating
diffusion
processes.
Moreover,
optimal
transfer
efficiency
achieved
conditions
characterized
an
AR
=
0.2,
Ra=106,
Da=10−2,
N
10,
Le
1,
volume
fraction
ϕthnp=0.04.
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
61, С. 105064 - 105064
Опубликована: Сен. 1, 2024
Magnetohydrodynamic
and
entropy
generation
of
double-diffusive
mixed
convection
in
a
curvilinear
cavity
filled
with
nano-enhanced
phase
change
material
rotating
cylinder
has
been
studied
this
paper.
Three
heat
sources
have
considered
range
different
variables
such
as
Reynolds
number
(10
≤
Re
100),
Richardson
(0.1≤
Ri
10),
Hartmann
(0≤
Ha
≤50)
Lewis
Le
0.9),
bouncy
ratio
(1≤
Nz
5),
fusion
temperature
θf
≤0.9)
Stephan
Ste
≤0.9).
These
numerically
solved
by
applying
the
Finite
Element
Method.
The
main
results
indicated
that
transfer,
mass
transfer
capacity
are
hugely
increased
increase
Re,
volume
concentration
while
decreasing
generation.
Furthermore,
melting/solidification
region
is
influenced
variable
negligible
influence
on
streams,
transfer.
value
average
Nusselt
Sherwood
328
%
258
respectively
increasing
from
10
to
100.
Also,
these
two
numbers
decreased
61
54
0
20.
