Journal of Engineering and Applied Science,
Journal Year:
2024,
Volume and Issue:
71(1)
Published: Dec. 1, 2024
Abstract
Nanofluids
in
microchannels
present
a
promising
solution
for
enhancing
heat
dissipation
across
various
engineering
applications.
This
study
provide
an
in-depth
analysis
of
nanofluid
role
improving
transfer
efficiency,
focusing
on
critical
factors
such
as
nanoparticle
concentration,
type,
and
size.
The
influence
microchannel
geometry—such
sinusoidal,
square,
circular
designs—and
the
addition
rib
structures
were
also
examined.
A
noticeable
increase
pressure
drop
was
observed
spectrum
investigations
beyond
concentration
threshold
1
vol.
%.
Diverging-converging
channels
demonstrated
potential
with
minimal
pumping
power.
Most
reviewed
papers
have
used
water
water-ethylene
glycol
mixtures
(65%
16%,
respectively),
along
prevalent
use
Al
2
O
3
nanoparticles
(37%),
underscoring
need
to
explore
alternative
base
fluids
combinations
achieve
optimal
performance.
focus
numerical
simulations
61%
75%
single-phase
flow
studies
highlights
expand
research
into
multiphase
phenomena.
Furthermore,
limited
exploration
shape
effects
reliance
simplistic
thermal
conductivity
models
point
toward
avenues
future
investigation
model
refinement.
Heat Transfer,
Journal Year:
2024,
Volume and Issue:
53(3), P. 1190 - 1219
Published: Jan. 2, 2024
Abstract
The
improvement
of
the
cooling
performance
liquid‐cooled
microchannel
heat
sinks
used
for
densely
packed
electronic
circuits
is
sorted
via
passive
techniques
like
tuning
substrate
or
coolant
properties.
We
propose
a
design
enhancing
sink
by
simulataneously
modifying
channel
geometry
and
fluid
rheology.
By
modeling
as
power
law
fluid,
its
rheological
behavior
varied
ranging
from
shear‐thinning
to
shear‐thickening,
alongside
Newtonian
fluid.
introduced
tapering
middle
wall
that
separates
bottom
top
channels
double
layered
(DL‐MCHS),
causing
both
converge.
This
convergence
not
only
increases
flow
velocity
within
downstream
but
also
reduces
apparent
viscosity
being
subjected
shear,
resulting
in
enhanced
thermal
hydraulic
performance.
analyze
results
first
second
thermodynamics
context,
demonstrating
tapered
DL‐MCHS
with
outperforms
straight
partition
coolant.
However,
we
discovered
extreme
compromises
thermodynamic
viability,
fine‐tuning
extent
tapering,
inferred
can
become
viable
little
compromise
Case Studies in Thermal Engineering,
Journal Year:
2023,
Volume and Issue:
53, P. 103938 - 103938
Published: Dec. 25, 2023
Effective
cooling
solutions
become
increasingly
crucial
as
micro-electrical
devices
advance
in
complexity
and
miniaturization.
Microchannel
heat
sinks
(MCHSs)
are
one
of
the
solutions,
researchers
continuously
exploring
innovative
designs
optimization
techniques
to
ensure
that
these
meet
evolving
demands
modern
electronics.
In
current
research,
a
novel
disk-shaped
MCHS
with
strategically
positioned
baffles
was
selected
be
investigated.
Total
thermal
resistance
(Rt)
pressure
drop
(ΔP)
were
scrutinized
assess
role
baffle's
structural
parameters
(length
first
row
(L),
values
500
μm–1500
μm,
space
between
(S),
1700
μm–2500
angle
(θ),
45°–90°).
Firstly,
various
combinations
study
designs,
each
numerically
simulated.
Artificial
neural
network
(ANN)
models
genetic
algorithm
employed
predict
data
identify
optimal
designs.
Based
on
obtained
results,
higher
R2
(0.9940
for
Rt
Model
0.9996
ΔP
model)
indicated
accurate
performance
both
ANN
models.
Two
(OTP)
hydraulic
(OHP)
separate
objectives
minimizing
recommended.
The
utilization
dimensions
L
=
1500
S
2500
θ
90°
led
attainment
OTP.
While
acquire
OHP,
it
necessary
use
81.8325°.
OTP
design,
reduced
by
about
49.47
%,
while
OHP
decreased
approximately
30.36
%
compared
reference
design.
Case Studies in Thermal Engineering,
Journal Year:
2024,
Volume and Issue:
56, P. 104255 - 104255
Published: March 23, 2024
Pumping
coolant
or
using
pulse
flow
through
microchannels
with
novel
structures
on
microelectronic
devices
is
suitable
for
high
heat
flux
dissipation
and
sensor
development.
This
study
proposes
a
microchannel
designed
as
series
of
biomimetic
bark
channel
networks.
Simulation
experimental
testing
temperature
distribution
transfer
performance
are
conducted
under
different
working
conditions,
including
various
fluid
parameters.
The
results
show
that
combining
bar
pulsation
can
improve
performance.
effect
pulsating
frequency
the
only
evident
outside
range
10
mm
from
inlet.
Compared
non-slip
boundaries,
boundary
slip
slightly
enhances
transfer.
Pulsating
has
an
optimal
frequency,
minimizing
thermal
resistance
inlet
temperatures.
Energy Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 2, 2025
Effective
thermal
management
is
a
critical
challenge
in
electric
vehicles
(EVs),
influencing
the
efficiency,
reliability,
and
lifespan
of
key
components
such
as
drive
motors,
inverters,
reducers.
This
comprehensive
review
systematically
evaluates
advanced
cooling
technologies
for
EV
powertrains,
providing
comparative
analysis
traditional
emerging
solutions.
Novel
insights
are
presented
on
integration
innovative
materials,
nanofluids
phase‐change
application
artificial
intelligence
(AI)
dynamic
optimization.
The
study
highlights
enhanced
performance
achieved
through
hybrid
approaches
that
synergize
liquid
air‐cooling
methods.
Additionally,
introduces
transformative
potential
AI‐driven
systems
optimizing
predicting
loads,
detecting
faults
real
time.
novelty
this
work
lies
its
focus
holistic
multiple
components,
bridging
gap
current
literature
by
addressing
interplay
strategies
across
entire
powertrain.
underscores
need
continued
innovation
to
meet
growing
demands
technology
sustainability
goals.
