Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: July 21, 2023
Volumetric
additive
manufacturing
techniques
are
a
promising
pathway
to
ultra-rapid
light-based
3D
fabrication.
Their
widespread
adoption,
however,
demands
significant
improvement
in
print
fidelity.
Currently,
volumetric
prints
suffer
from
systematic
undercuring
of
fine
features,
making
it
impossible
objects
containing
wide
range
feature
sizes,
precluding
effective
adoption
many
applications.
Here,
we
uncover
the
reason
for
this
limitation:
light
dose
spread
resin
due
chemical
diffusion
and
optical
blurring,
which
becomes
features
⪅0.5
mm.
We
develop
model
that
quantitatively
predicts
variation
time
with
size
demonstrate
deconvolution
method
correct
error.
This
enables
previously
beyond
capabilities
manufacturing,
such
as
complex
gyroid
structure
variable
thickness
fine-toothed
gear.
These
results
position
mature
printing
method,
all
but
eliminating
gap
industry-standard
International Journal of Heat and Mass Transfer,
Journal Year:
2024,
Volume and Issue:
231, P. 125882 - 125882
Published: June 29, 2024
This
paper
presents
a
study
of
novel
type
heat
exchanger
(HE)
whose
core
is
built
based
on
Triply
Periodic
Minimal
Surface
structure.
The
this
as
periodic
structure
gyroid-type
lattice
and
manufactured
by
laser
powder-bed
fusion
technology.
solution
distinguished
not
only
an
exceptionally
favorable
ratio
the
exchange
surface
area
to
volume
occupied
but
also
unique
geometry
that
additionally
turbulates
flow
intensifies
process.
article
contains
results
numerical
analyses
entire
under
different
operating
conditions
small
fragments
filled
with
cells
sizes.
Numerical
analyzes
lattice-type
are
performed
basis
experimentally
validated
model.
objective
determine
performance
gyroid
HE
operational
select
best
elementary
cell
size
per
for
assumed
conditions.
printed
was
compared
plate
30%
larger,
although
one
managed
achieve
10.5%
higher
values
in
average
Number
Transfer
Units
(NTU)
5%
temperature
effectiveness
(TE)
studied
range
parameters.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 20, 2025
Abstract
Lattice
metamaterials
emerge
as
advanced
architected
materials
with
superior
physical
properties
and
significant
potential
for
lightweight
applications.
Recent
developments
in
additive
manufacturing
(AM)
techniques
facilitate
the
of
lattice
intricate
microarchitectures
promote
their
applications
multi‐physical
scenarios.
Previous
reviews
on
have
largely
focused
a
specific/single
field,
limited
discussion
properties,
interaction
mechanisms,
multifunctional
Accordingly,
this
article
critically
design
principles,
structure‐mechanism‐property
relationships,
enabled
by
AM
techniques.
First,
are
categorized
into
homogeneous
lattices,
inhomogeneous
other
forms,
whose
principles
processes
discussed,
including
benefits
drawbacks
different
fabricating
types
lattices.
Subsequently,
structure–mechanism–property
relationships
mechanisms
range
fields,
mechanical,
acoustic,
electromagnetic/optical,
thermal
disciplines,
summarized
to
reveal
critical
principles.
Moreover,
metamaterials,
such
sound
absorbers,
insulators,
manipulators,
sensors,
actuators,
soft
robots,
management,
invisible
cloaks,
biomedical
implants,
enumerated.
These
provide
effective
guidelines
Physics of Fluids,
Journal Year:
2025,
Volume and Issue:
37(2)
Published: Feb. 1, 2025
The
triply
periodic
minimal
surface
(TPMS)
is
a
potential
candidate
for
constructing
the
next-generation
heat
exchanger
(HEX)
due
to
its
considerably
high
specific
area
and
flexible
topology.
Considering
flow
rate
volume
ratio
of
cold-to-hot
fluid
domain,
this
work
aims
probe
matching
effect
on
thermohydraulic
features
cross-flow
HEXs
using
gyroid
TPMS
structures.
results
indicate
that
owing
contiguous
intertwined
path,
structures
induce
three-dimensional
spiral
with
three
typical
characteristics
(“merge-split,”
parallel,
circulation)
from
different
perspectives,
dominating
mixing
exchanger.
have
negligible
influence
but
intensities.
Increasing
cold-side
velocity
constant
hot-side
can
remarkably
enhance
convection
transfer
cold
side
an
increased
pressure
drop,
while
hot
influenced
negligibly.
Finally,
total
gradually
raised
reaches
stability
limited
transfer.
A
slightly
higher
recommended
improving
HEXs.
In
comparison,
simultaneously
affects
fluid–solid
interface
internal
under
mutual
restriction
between
fluids
optimum
Rvol
=
1.0.
With
0.42
1.0,
by
7.7%,
outlet
temperature
decreases
1.5
K.
Compared
traditional
structures,
structure
offers
100%
150%–225%
volume-based
power
density.
Applied Thermal Engineering,
Journal Year:
2022,
Volume and Issue:
217, P. 119198 - 119198
Published: Aug. 28, 2022
Whether
triply
periodic
minimal
surface
(TPMS)
heat
exchangers
are
applicable
to
cooling
or
cold
storage
systems
as
a
cooler
for
supercritical
carbon
dioxide
(SCO2)
is
undocumented.
Here
the
conjugated
transfer
of
SCO2
in
TPMS
Schoen-G
exchanger
and
printed
circuit
(PCHE)
was
predicted
based
on
three-dimensional
steady
turbulent
Reynolds-averaged
Navier-Stokes
equations,
energy
equation
shear
stress
transport
model
using
computational
fluid
dynamics
software
ANSYS
CFX
when
inlet
temperature
pressure
vary
65–30
℃
(8–9)MPa.
two
cooled
under
counter-flow
conditions
by
stream
water
with
given
mass
flow
rate.
It
shown
that
mean
coefficient
larger
than
PCHE.
As
rises,
friction
factor
increases
Nusselt
number
decreases
due
decreased
Reynolds
Prandtl
number,
respectively.
The
ratio,
ratio
performance
evaluation
criterion
range
0.38–0.50,
1.07–1.49,
1.45–2.04
PCHE
serves
reference
exchanger.
streamlines
quite
smooth
even
though
areas
higher
velocity
appear.
exhibit
spiral
pattern
result
extra
hydraulic
loss.
enhancement
much
better
Schwarz-D
at
16,000.
attributed
area
more
topological
tortuosity
without
separation
Energies,
Journal Year:
2022,
Volume and Issue:
15(21), P. 7994 - 7994
Published: Oct. 27, 2022
The
design
of
heat
exchangers
may
change
dramatically
through
the
use
additive
manufacturing
(AM).
Additive
manufacturing,
colloquially
known
as
3D
printing,
enables
production
monolithic
metal
bodies,
devoid
contact
resistance.
small
volume
exchanger,
its
lightness
weight,
and
reduction
costs,
compared
to
conventional
methods,
make
by
AM
methods
technologies.
review
study
presents
a
new
look
at
TPMS
promising
type
developed
surface
that
can
be
used
in
area
transfer.
(Thus
far,
only
attractive
option.
most
important
feature
is
ability
print
geometry
theoretically
any
topography.
Such
topography
minimal
or
extended
version—triply
periodic
(TPMS).
It
was
practically
impossible
manufacture
TPMS-based
exchanger
with
method
producing
TPMS.)
issues
related
products
cycle
object
preparation
for
printing
were
discussed,
available
publications
presenting
results
CFD
simulations
experimental
tests
containing
their
construction
widely
discussed.
has
been
noticed
thermal-flow
transfer
TPMSs
research,
number
this
field
very
limited.
few
data
(mainly
simulations)
show
causes,
on
one
hand,
several-fold
increase
Nu,
other
an
flow
reduce
size
60%.
concluded
research
should
carried
out
order
optimize
structure
porosity
so
gains
from
improved
compensate
energy
expenditure
transport
working
fluid.
among
numerous
types
exchangers,
practically,
four
have
thus
far:
primitive,
gyroid,
I-WP,
diamond.
At
moment,
diamond
seems
terms
sinks.
required
conduct
verify
simulation.
