Journal of Fluid Mechanics,
Год журнала:
2023,
Номер
966
Опубликована: Июль 10, 2023
The
presence
of
thermocapillary
(Marangoni)
convection
in
microgravity
may
help
to
enhance
the
heat
transfer
rate
phase
change
materials
(PCMs)
space
applications.
We
present
a
three-dimensional
numerical
investigation
nonlinear
dynamics
melting
PCM
placed
cylindrical
container
filled
with
n-octadecane
and
surrounded
by
passive
air.
exchange
between
ambient
air
is
characterized
terms
Biot
number,
when
temperature
has
linear
profile.
effect
on
topology
front
studied
varying
applied
difference
circular
supports
through
interface.
evolution
Marangoni
during
leads
appearance
hydrothermal
instabilities.
A
new
mathematical
approach
for
analysis
emerging
waves
(HTWs)
suggested.
Being
first
time
examination
PCMs,
this
procedure
allows
us
explore
nature
coupling
HTWs
gain/loss
interface,
how
it
changes
over
time.
observe
variety
dynamics,
including
standing
travelling
waves,
determine
their
dominant
secondary
azimuthal
wavenumbers.
Coexistence
multiple
different
wavenumbers,
rotating
same
or
opposite
directions,
among
most
fascinating
observations.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(33), С. 21490 - 21514
Опубликована: Янв. 1, 2024
A
critical
review
of
the
regulatory
mechanisms,
structural
design,
cooling
performance,
and
applications
hybrid
to
advance
its
commercial
use
in
passive
cooling.
Coatings,
Год журнала:
2023,
Номер
13(2), С. 258 - 258
Опубликована: Янв. 21, 2023
The
growing
concern
for
the
environment
and
depletion
of
raw
materials
such
as
fossil
fuels
is
driving
research
towards
exploitation
new
development
technologies.
Phase-change
(PCMs)
are
increasingly
used
to
reduce
energy
required
heating/cooling
buildings.
biggest
challenge
find
a
PCM
with
suitable
characteristics
able
meet
needs
different
climates
in
which
it
placed.
originality
our
research,
therefore,
lies
possibility
selecting
most
appropriate
polymer
produce
climatic
conditions
that
characterize
area
building
located.
Furthermore,
proposed
form-stable
PCMs
were
obtained
by
including
low-toxic,
low-flammability
polymers
waste
stone
fragments,
according
principles
circular
economy.
These
original
sustainable
then
aggregates
adding
them
mortars
(based
on
air
lime,
hydraulic
cement
gypsum).
containing
analyzed
fresh
(workability)
hardened
(flexural
compressive
strengths
thermal
characteristics)
states.
results
showed
although
inclusion
reduced
mechanical
properties
mortars,
good
can
be
still
achieved
using
an
adequate
binder
content.
produced
also
analysis
assess
how
addition
PEG-based
affected
their
behavior.
proven
effective
improving
indoor
temperature
when
included
applied
plasters.
Journal of Fluid Mechanics,
Год журнала:
2023,
Номер
966
Опубликована: Июль 10, 2023
The
presence
of
thermocapillary
(Marangoni)
convection
in
microgravity
may
help
to
enhance
the
heat
transfer
rate
phase
change
materials
(PCMs)
space
applications.
We
present
a
three-dimensional
numerical
investigation
nonlinear
dynamics
melting
PCM
placed
cylindrical
container
filled
with
n-octadecane
and
surrounded
by
passive
air.
exchange
between
ambient
air
is
characterized
terms
Biot
number,
when
temperature
has
linear
profile.
effect
on
topology
front
studied
varying
applied
difference
circular
supports
through
interface.
evolution
Marangoni
during
leads
appearance
hydrothermal
instabilities.
A
new
mathematical
approach
for
analysis
emerging
waves
(HTWs)
suggested.
Being
first
time
examination
PCMs,
this
procedure
allows
us
explore
nature
coupling
HTWs
gain/loss
interface,
how
it
changes
over
time.
observe
variety
dynamics,
including
standing
travelling
waves,
determine
their
dominant
secondary
azimuthal
wavenumbers.
Coexistence
multiple
different
wavenumbers,
rotating
same
or
opposite
directions,
among
most
fascinating
observations.
