Results in Engineering,
Год журнала:
2023,
Номер
19, С. 101303 - 101303
Опубликована: Июль 18, 2023
A
numerical
and
experimental
study
is
conducted
to
improve
the
hydrothermal
performance
of
a
printed
circuit
heat
exchanger
(PCHE)
using
innovative
channels.
Sinusoidal
two-way
corrugated
channels
are
proposed
modify
PCHE
design.
The
simulation
was
performed
under
laminar
flow
condition
water
as
cooling
fluid
for
both
cold
hot
sides
with
Reynolds
number
range
(300–1900).
modified
PCHEs,
different
wave
amplitudes
plates
channels,
evaluated
according
traditional
PCHE.
Two
PCHEs
were
manufactured
tested
experimentally
validate
model.
results
demonstrated
that
use
an
effective
technique
enhancing
Nusselt
number,
evaluation
factor,
effectiveness
In
addition,
outcomes
revealed
transfer
improvement
increases
increasing
in
directions.
friction
factor
showed
enhancement
78%
150%
respectively.
At
same
time,
overall
increased
by
about
1.5
times
more
than
PCHE,
while
approximately
27%.
International Journal of Thermofluids,
Год журнала:
2024,
Номер
21, С. 100578 - 100578
Опубликована: Янв. 21, 2024
The
objective
of
this
numerical
study
is
to
examine
how
different
Reynolds
numbers
impact
heat
and
mass
transfer
in
an
unsteady
forced
convective
two-dimensional
flow
within
a
right-angle
triangular
cavity.
lowest
surface
the
enclosure
held
at
fixed
temperature
concentration,
whereas
slanted
taken
be
cool
surface.
Furthermore,
cavity's
left
wall
adiabatically
positioned
move
two
directions:
upwards
(aiding
flow)
downwards
(opposing
flow),
with
constant
speed
being
maintained.
partial
differential
equations
that
govern
system
are
converted
into
non-dimensional
form
through
straightforward
transformation.
finite-element
scheme
employed
solve
these
dimensionless
equations.
analysis
facilitates
investigation
belongings
number
on
appearances
by
using
streamlines,
isotherms,
iso-concentration
lines.
It
initiated
spreading
as
well
concentration
cavity
depends
strongly
number.
Moreover,
motion
moving
influences
patterns
fluid
flow,
temperature,
fields.
This
provides
comprehensive
behavior
occurring
lid-driven
right-angled
opposite
directions
for
aiding
opposing
respectively.
Results in Engineering,
Год журнала:
2023,
Номер
19, С. 101360 - 101360
Опубликована: Авг. 22, 2023
A
numerical
study
on
the
forced
convection
of
water-Cu
power-law
non-Newtonian
nanofluid
in
a
wavy
channel
has
been
done.
The
temperature
horizontal
walls
is
larger
than
that
input
fluid.
governing
equations
are
solved
by
SIMPLE
algorithm-based
finite
volume
method.
effects
pertinent
parameters
index,
Reynolds
number,
and
nanoparticle
fraction
have
varied.
obtained
results
presented
terms
local
average
Nusselt
number
(Nu)
for
rate
heat
transfer,
streamlines,
isotherms.
correlation
using
Response
Surface
Analysis
(RSM)
flow
parameters.
relationship
between
output
was
observed
plotting
response
surface
contours
were
RSM.
sensitivity
to
all
also
observed.
This
concludes
transfer
enhanced
channels
adding
nanoparticles
increasing
number.
It
shear-thinning
nanofluids
can
be
more
effective
enhancement
shear-thickening
fluids.
