Piezo-viscous flows of couple stress fluids in squeeze film in an annular circular discs
Physics of Fluids,
Journal Year:
2025,
Volume and Issue:
37(1)
Published: Jan. 1, 2025
Experimental
evidence
shows
that
for
certain
fluids,
at
high
pressures,
the
viscosity
of
fluid
depends
on
pressure.
Such
fluids
are
referred
to
as
piezo-viscous
fluids.
The
present
paper
investigates
dependence
coupled
stress
flow
between
parallel
annular
disks.
study
assumes
an
exponential
change
in
with
pressure
and
analytically
approximates
using
a
perturbation
method,
parameter
small
parameter.
results,
which
include
calculation
visual
demonstration
squeeze
film
time,
load-bearing
capacity,
over
various
viscosity-pressure
characteristics,
reveal
significant
relationship
increase
piezo-viscosity
growth
pressure,
response
bearing
load.
These
findings
have
direct
implications
practical
applications
bearings,
seals,
lubrication,
where
control
is
crucial
maintaining
smooth
operation
enhancing
productivity.
Language: Английский
Analysis of Eyring–Powell couple stress nanofluid flow with motile microorganisms over a rough sphere: Modified Adomian decomposition
ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik,
Journal Year:
2025,
Volume and Issue:
105(3)
Published: March 1, 2025
Abstract
The
study
of
couple
stress
in
Eyring–Powell
nanofluid
(EPF)
flow
over
a
rough
sphere,
enriched
with
motile
microorganisms,
is
crucial
for
biomedical
engineering,
environmental
sciences,
and
advanced
manufacturing.
Therefore,
the
current
work
tackles
this
issue.
exposed
to
buoyancy‐driven,
normal
magnetic
field
(MF),
Joule
heating,
chemical
reaction,
heat
source,
radiation
influences.
Along
slip
velocity
appropriate
boundary
conditions
(BCs),
mathematical
architecture
tests
equations
momentum,
energy,
nanomaterial
volume
percentage,
microbe
concentration.
importance
stems
from
application
temperature,
speed,
nonmaterial
allocations
identify
benefits
or
drawbacks
nanomaterials
microorganisms
such
as
bacteria,
viruses,
germs
stream
close
curved
surfaces.
It
assumed
that
structure
has
valuable
related
parameter
many
industrial
engineering
manufacturing
mechanisms
like
combustion,
conduits,
magnified
diffusion,
sports
balls,
flow‐structure
interaction
between
aerodynamics
hydrodynamics.
These
nonlinear
partial
differential
(PDEs)
are
analyzed
via
modified
Adomian
decomposition
method
(MADM)
have
analytical
interpretations
fraction,
microorganism
profiles.
Heat
dispersion
enhanced
nearly
all
associated
coefficients.
Moreover,
nanoparticles
significantly
concentrated
parameters,
excluding
those
already
elevate
temperature.
This
indicates
transfer
occurs
comprehensively,
yielding
significant
advantages
various
medical
applications.
Language: Английский
Influence of roughness patterns and slip velocity on the lubrication of MHD-affected secant curved annular plates
Ramesh Kempepatil,
No information about this author
Mawaheb Al‐Dossari,
No information about this author
Ayyappa G. Hiremath
No information about this author
et al.
International Communications in Heat and Mass Transfer,
Journal Year:
2024,
Volume and Issue:
160, P. 108401 - 108401
Published: Dec. 3, 2024
Language: Английский
Investigating journal bearing characteristics incorporating variable viscosity, couple-stress lubricant, slip-velocity, magnetic fluid, and sinusoidal surface-texturing
Results in Engineering,
Journal Year:
2024,
Volume and Issue:
22, P. 102338 - 102338
Published: June 1, 2024
This
study
contributes
to
the
practical
understanding
of
journal
bearings
by
comprehensively
exploring
impact
variable
viscosity,
sinusoidal
surface
texturing,
slip
velocity,
magnetic
fluid,
and
couple-stress
lubricants
on
pressure
distribution.
Utilising
Barus
viscosity
formula,
incorporating
ferrofluid
as
a
lubricant,
employing
Finite
Difference
Method
for
numerical
analysis,
this
research
reveals
insights
such
increased
load-carrying
capacity
distribution
in
textured
bearings.
The
results
indicate
that
small
distance
ratio
high
parameters
increase
pressure.
Textured
approximately
246%
165%,
respectively.
In
addition,
magnetic,
couple-stress,
piezo-viscosity,
maximal
load.
Reducing
bearing
attitude
angle
improves
capacity.
parameter
increases
angle,
does
parameter.
High
values
reduce
friction,
particularly
presence
surface,
amplifies
effect.
highlights
influence
bearing's
performance,
offering
valuable
optimising
designs
operations
various
engineering
applications.
Language: Английский
Magnetohydrodynamic squeeze film characteristics of micropolar fluids with piezo-viscous dependency between wide parallel rectangular plates
S. J. Sheela,
No information about this author
R. Arunkumar,
No information about this author
B. N. Hanumagowda
No information about this author
et al.
Multiscale and Multidisciplinary Modeling Experiments and Design,
Journal Year:
2024,
Volume and Issue:
8(1)
Published: Dec. 18, 2024
Language: Английский