Partial Differential Equations in Applied Mathematics,
Journal Year:
2024,
Volume and Issue:
11, P. 100859 - 100859
Published: Aug. 5, 2024
Owing
to
enhanced
features
of
nanomaterials,
various
applications
such
materials
have
been
suggested
in
the
thermal
systems,
heat
exchanges,
electronic
cooling
coolant
processes,
energy
production
etc.
Following
motivated
applications,
objective
current
analysis
is
presents
bioconvective
double
stratification
flow
Sutterby
nanofluid
due
bidirectional
moving
surface.
The
interpretation
problem
subject
utilization
radiative
effects,
activation
and
source.
observations
for
heat,
mass
microorganism's
assessment
are
performed
by
using
convective
boundary
conditions.
Shooting
numerical
simulations
modeled
problem.
It
noticed
that
transfer
enhances
parameter.
An
increment
larger
values
Biot
number.
claimed
results
offer
significance
controlling
heating
devices,
generation,
manufacturing
developments,
solar
systems
International Journal of Thermofluids,
Journal Year:
2024,
Volume and Issue:
24, P. 100843 - 100843
Published: Sept. 1, 2024
This
study
presents
a
novel
investigation
into
the
thermal
behavior
of
hybrid
nanofluid
(MgO
−
Ag
H2O)
in
natural
convection
around
porous
fin
triangular
enclosure
under
influence
radiation
and
magnetohydrodynamic
effects.
The
research
uniquely
combines
these
complex
phenomena,
addressing
significant
gap
literature.
configuration
has
potential
applications
advanced
solar
collectors,
electronic
cooling
systems
for
high-power
devices,
compact
heat
exchangers
various
industries.
main
objectives
are
to
understand
how
parameters
transfer
fluid
flow
optimize
design
enhanced
performance.
considers
range
variables
including
Rayleigh
number
(103
106),
Hartmann
(0
–
50),
Aspect
ratio
(0.3
0.6),
(Rd
=
1
5,
λ
5),
volume
concentration
(0-
0.05),
which
have
been
numerically
analyzed
using
finite
element
method
(FEM).
findings
reveal
that
increasing
Darcy
(Da)
enhances
at
low
numbers
(Ra
103,104).
However,
higher
Ra
impact
Da
becomes
more
complex,
with
critical
beyond
efficiency
decreases
due
an
increase
resistance.
nanoparticle
plays
vital
role,
as
concentrations
lead
improved
efficiency,
especially
Ra,
through
conductivity
dispersion.
length
greatly
impacts
patterns
rates,
longer
fins
creating
patterns,
promoting
stronger
plumes.
Thermal
radiation,
represented
by
λ),
significantly
influences
both
rate
convective
within
enclosure.
also
incorporates
comprehensive
entropy
generation
analysis,
providing
insights
system
irreversibilities
optimization
potential.
analysis
reveals
interplay
between
their
on
offering
valuable
guidance
designing
high-performance
management
systems.
Journal of Computational Design and Engineering,
Journal Year:
2024,
Volume and Issue:
12(1), P. 1 - 14
Published: Oct. 30, 2024
Abstract
This
research
provides
an
extensive
analysis
with
various
γ
on
natural
convection,
thermal
entropy
generation,
fluid
flow,
and
temperature
distribution
in
the
porous
cavity.
The
impact
of
studied
geometrical
parameters,
Ha,
Da,
Pr,
γ,
ε,
performance
is
carefully
examined.
finite
element
method
(FEM)
carried
out
to
analyze
flow
heat
present
media.
For
in-depth
performance,
novel
aspects
this
are
thought
be
important
parameters
that
comprise
ε
for
significant
assessments
average
Nusselt
number
media
varying
square
size
vanes
at
corners
effect
variable
cooled
In
validation,
calculation
results
was
adapted
accurately
FEM’s
distribution,
number.
Numerical
revealed
affected
widely
generation
entropy.
Additionally,
hot
cold
significantly
impacted
by
square-sized
chamber.
showed
a
increase,
Hartman
being
most
contributor.
Moreover,
as
Darcy
grew,
rose
apart
from
=
1
0.2.
International Journal of Numerical Methods for Heat & Fluid Flow,
Journal Year:
2024,
Volume and Issue:
34(11), P. 4159 - 4178
Published: Sept. 4, 2024
Purpose
The
purpose
of
this
study
is
to
analyze
the
free
convection
phenomena
arising
from
a
temperature
disparity
between
cold
circular
cylinder
and
heated
corrugated
cylinder.
Design/methodology/approach
Numerical
simulations
were
used
patterns.
inner
cylinder,
made
thermally
conductive
solid
material,
was
through
its
surface,
while
space
cylinders
filled
with
air.
governing
equations
for
velocity,
pressure
solved
using
Galerkin
finite
element
method-based
solver
partial
differential
equations.
Findings
explored
various
parameters
affecting
dynamic
thermal
structure
flow,
including
Rayleigh
number
(10
3
≤
Ra
10
6
),
corrugations
(3
N
18),
conductivity
hollow
(1
K
200)
angle
inclination
(0°
φ
90°).
Results
indicated
notable
sensitivity
flow
intensity
changes
in
cylinder’s
.
Particularly,
=
,
average
heat
transfer
rate
increased
by
203%
ratio
increment
1
100
but
decreased
16.3%
as
18.
Originality/value
This
research
contributes
understanding
complex
interplay
geometry,
properties
dynamics
natural
systems
involving
cylindrical
geometries.
findings
offer
useful
insights
improving
procedures
real-world
situations.
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(12)
Published: Dec. 1, 2024
This
study
explores
the
impact
of
magnetic
field
on
heat
transfer
and
entropy
generation
in
a
simulated
electronic
device
using
magnetohydrodynamic
principles
through
three-dimensional
hybrid
Runge–Kutta
lattice
Boltzmann
method.
By
varying
Rayleigh
number
(Ra)
from
103
to
106
Hartmann
(Ha)
between
0
100,
research
evaluated
influence
these
parameters
average
Nusselt
(⟨Nu⟩),
exchange
ratio
(R),
within
confined
cavity.
The
results
demonstrated
that
higher
Ra
values,
particularly
for
≥105,
significantly
enhance
convective
transfer,
as
reflected
by
an
increase
⟨Nu⟩.
However,
introducing
(Ha
=
50,
100)
diminishes
this
effect
damping
fluid
motion,
resulting
reduction
increases
with
Ra,
reaching
peak
value
0.93
Ha
100
105,
indicating
improved
dissipation
under
influence.
In
terms
generation,
at
low
(Ra
103),
thermal
conduction
is
predominant
mechanism,
primarily
generated
due
effects.
As
106,
system
shifted
toward
convection-dominated
regime,
where
viscous
effects
becomes
more
significant.
Under
stronger
fields,
emerges
dominant
factor,
further
increasing
energy
dissipation.
These
suggested
fields
can
be
strategically
applied
optimize
management
devices
controlling
both
generation.
effectiveness
approach,
however,
highly
dependent
specific
flow
conditions
strength
field.
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(9)
Published: Sept. 1, 2024
Although
there
have
been
more
studies
on
droplet
formation
under
the
control
of
electrostatic
field
in
recent
years,
relationship
between
composite
and
are
fragmented.
In
order
to
analyze
effect
formation,
this
paper
numerically
investigates
electro-hydrodynamics
double
emulsion
a
Y-shaped
microchannel
experimentally
verifies
applied
phase
interface
capture
method.
Calculations
carried
out
using
model
coupled
with
method
interfacial
evolution
emulsions
different
electric
strengths
quantitatively
study
process.
Four
flow
regimes
from
previous
were
found:
dripping
regime,
jetting
threading
jetting-dripping
transition
among
which
frequency
(
f
)
droplets
short
regime
was
up
769
Hz.
The
eccentricity
(ε)
smallest,
ε
0.2,
coefficient
deformation
(Defm)
middle
minimized
0.05.
It
is
observed
that
linear
Cam/Cao
CaE
generation
multi-core
droplets.
When
greater
than
14,
channel
always
no
matter
how
changed.
