PCMs
are
widely
employed
in
electronic
thermal
control
systems
for
spacecraft
because
of
their
substantial
energy
storage
competencies.
Therefore,
the
influence
gravitational
acceleration
(GA)
on
PCM
performance
is
particular
importance.
Simultaneously,
considering
spacecraft's
center
gravity,
attitude
control,
and
structural
design,
selection
an
appropriate
battery
orientation
becomes
crucial
to
maximize
utilization
available
space.
This
study
employs
numerical
simulation
assess
heat
transfer
efficiency
behavior
BTMS
cooled
under
varying
environments
(0.05
g,
0.1
1
10
20
g)
different
inclination
angles
(θ=90°,
45°,
0°)
via
enthalpy-porosity
method.
Research
results
indicate
that
as
gravity
increases
from
0.05
g
melting
time
shortened
by
15%,
reducing
95.05
s
81.30
s.
phenomenon
can
be
explained
enhanced
convective
capability,
increasing
maximum
velocity
(Vmax)
liquid
(PCMl)
over
12
times.
Particularly,
when
GA=
θ
45°
90°
reduces
59.05s
(9.66%
reduction)
compared
θ=45°,
while
at
θ=0°,
it
decreases
65.75
(10.75%
reduction).
Notably,
some
unmelted
solid
accumulates
lower
right
corner
enclosure
hindering
transfer.
Based
characteristics
accumulation
effects,
three
optimization
structures
proposed
this
study.
It
observed
t=240s
enhancement
particularly
prominent
with
presence
fins.
Furthermore,
comparing
CHTC
curves
before
after
optimization,
evident
accumulated
effect
has
been
effectively
eliminated
optimization.
In
conclusion,
paper
conducted
in-depth
investigation
into
correlation
between
fin
mass,
well
volume
ratio(γ)
was
that,
condition
same
speed,
optimized
model
impact
weight
values
θ.
comparison
θ=90°,
θ=45°
increase
approximately
1g
mass
sufficient
achieve
complete
PCM,
whereas
11.2%
required.
distinctly
highlights
significant
results.
These
research
findings
offer
reference
insights
design
aerospace
field.
