Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
55, С. 104161 - 104161
Опубликована: Фев. 22, 2024
This
paper
undertakes
a
numerical
exploration
into
the
dynamics
of
fluid
flow
and
heat
transfer
within
stagnation
region
mixed
convection
scenario
involving
thermally
stratified
ternary
hybrid
nanofluid.
The
study
incorporates
impact
magnetohydrodynamic
velocity
slip,
while
also
considering
permeable
sheet
that
can
stretch
or
shrink.
equations
governed
problem
are
transformed
similarity
using
transformation.
Then
solved
utilizing
built
in
solver
(bvp4c)
MATLAB.
has
two
solutions,
as
expected.
Following
that,
outcomes
stability
analysis
show
viability
physical
robustness
first
solution.
Additionally,
identifies
magnetic,
suction,
volume
fraction
parameters
capable
delaying
turbulence
onset
boundary
layer.
Moreover,
transmission
nanofluid
is
enhanced
by
an
increased
fraction.
It
important
to
note
reported
results
specifically
pertain
combination
alumina,
copper,
titania
nanoparticles.
Different
combinations
nanoparticles
may
exhibits
unique
properties
related
both
behaviour
transmission.
International Journal of Numerical Methods for Heat & Fluid Flow,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 20, 2024
Purpose
The
hybrid
nanofluid
flow
due
to
a
rotating
disk
has
numerous
applications,
including
centrifugal
pumps,
paper
production,
polymers
dying,
air
filtration
systems,
automobile
cooling
and
solar
collectors.
This
study
aims
investigate
the
convective
heat
transport
magnetohydrodynamics
(MHD)
past
stretchable
surface
using
Yamada-Ota
Xue
models
with
impacts
of
generation
thermal
radiation.
Design/methodology/approach
carbon
nanotubes
such
as
single-wall
multi-wall
are
suspended
in
base
fluid
like
water
make
nanofluid.
problem’s
governing
partial
differential
equations
transformed
into
system
ordinary
similarity
transformations.
Then,
numerical
solutions
found
bvp4c
function
MATLAB
software.
pertinent
parameters
on
temperature
fields
depicted
tables
graphs.
Findings
Two
solution
branches
discovered
certain
range
unsteadiness
parameters.
rate
enhanced
when
radiation
effects
increased.
model
higher
than
model.
Furthermore,
it
is
observed
that
only
first
remains
stable
stability
analysis
implemented.
Originality/value
To
best
authors’
knowledge,
results
stated
original
new
investigation
MHD
transfer
extended
version
models.
Moreover,
novelty
present
improved
by
taking
Numerical Heat Transfer Part B Fundamentals,
Год журнала:
2024,
Номер
unknown, С. 1 - 27
Опубликована: Июнь 21, 2024
This
research
aims
to
develop
a
mathematical
model
and
outline
the
implications
of
free
convection
flow
within
non-Newtonian
Williamson–Sutterby
type
nonfluid
through
stretching
surface
placed
horizontally
with
magnetic
dipole
effect.
The
present
attempt
establishes
influence
multiple
factors,
including
double
diffusion,
heat
flux.
Utilizing
Cattaneo–Christov
mass
flux
approximations,
shape
thermal
concentration
balance
equations,
incorporating
various
generalized
transport
laws.
Furthermore,
transportation
mechanism
incorporates
Arrhenius
activation
energy
binary
chemical
reactions.
impact
bioconvection
resulting
from
self-propelled
microorganisms
is
incorporated
into
fluidic
model.
A
nonlinear
set
partial
differential
equations
(PDEs)
are
appropriately
formulated,
employing
boundary
layer
approximations
theory,
comprehensively
describe
convective
flow.
PDEs
converted
ordinary
via
similarity
transformation,
then
computationally
computed
well-structured
RKF45
technique
shooting
algorithm.
To
validate
results,
comparison
made
published
findings
in
limiting
cases.
It
observed
that
velocity
profiles
exhibit
an
escalation
tandem
ascending
values
electric
parameter
mixed
convection.
Conversely,
diminishes
augmentation
factor,
ferrohydrodynamic
interaction
parameter,
porosity
Sutterby
fluid
parameter.
Temperature
elevate
response
escalating
Eckert
number,
radiation
Brownian
motion
while
diminishing
relaxation
constant,
Prandtl
distribution
exhibits
increasing
magnitude
thermophoresis
experiencing
reduction
improvement
behavior
Schmidt
number
ongoing
investigation
encompasses
wide
spectrum
applications
field
applied
sciences,
placing
particular
emphasis
on
oil
recovery,
geothermal
reservoirs,
engineering,
cooling
processes
pertinent
nuclear
reactors.
Numerical Heat Transfer Part A Applications,
Год журнала:
2024,
Номер
unknown, С. 1 - 25
Опубликована: Март 20, 2024
This
study
elaborates
on
the
mathematical
modeling
of
tangent
hyperbolic
fluid
flow
driven
by
a
shrinking
sheet
in
porous
medium.
The
roles
Soret-Dufour
and
thermal
radiation
are
considered
to
model
energy
concentration
equations.
primary
objective
is
find
an
appropriate
similarity
transformation
through
Lie
group
analysis,
which
helps
produce
self-similar
equations
from
governing
nonlinear
partial
systems.
solutions
calculated
numerically
using
"bvp4c"
solver
Matlab.
Additionally,
adequate
suction
required
obtain
solutions.
As
expected,
dual
found
within
certain
range
parameter.
skin
friction
coefficient,
heat,
mass
transfer
rates
at
observed
for
pertinent
constraints
physical
interest.
It
reveals
that
bifurcate
critical
point,
beyond
this
no
solution
exists.
Furthermore,
branches
nondimensional
velocity,
temperature,
profiles
depict
different
characteristics.
Thus,
linear
temporal
stability
analysis
has
been
employed
test
stability,
revealing
upper
branch
physically
reliable.
heat
rate
increases
7.69%
9.55%
lower
branches,
respectively,
Soret
parameter
changes
0.6
0.9.
Meanwhile,
decreases
85.30%
324.60%
respectively.
consequences
Weissenberg
parameters
show
opposite
character
branch.
CFD letters,
Год журнала:
2025,
Номер
17(9), С. 163 - 177
Опубликована: Март 31, 2025
The
linear
stability
analysis
of
the
Barletta-Darcy-Be
́nard
convection
problem
in
a
horizontal
fluid-saturated
porous
layer
is
extended
to
weakly
nonlinear
considering
local
thermal
equilibrium
(LTE)
between
fluid
and
solid
phases.
minimal
Fourier-Galerkin
expansion
used
for
case
free
upper
surface
(Neumann
boundary
condition
on
stream
function)
along
with
isothermal
which
heat
transport
quantified
terms
Nusselt
number.
present
article
aims
fill
literature
gap
non-linear
analyses
classical
Darcy-Be
convection.
Weakly
has
not
been
performed
non-classical
problem.
A
comparison
results
those
made.
It
found
that
cell
size
larger
former
compared
latter.
critical
Darcy-Rayleigh
number,
however
smaller
one.
number
varies
inversely
as
Rayleigh
R
hence
increases
decrease
implies
more
transported
