Numerical analysis of saturated steam injection effects on steam turbine performance considering condensation losses and turbine stage efficiency
Leyla Iraj,
No information about this author
Mahdi Tamimi,
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Ali Jahangiri
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et al.
International Communications in Heat and Mass Transfer,
Journal Year:
2025,
Volume and Issue:
164, P. 108876 - 108876
Published: March 23, 2025
Language: Английский
Progress in the research on non-equilibrium condensation of the compressor in the supercritical CO2 closed Brayton cycle system
Xinzhe Zhang,
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Bin Yu,
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Guoju Li
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et al.
Physics of Fluids,
Journal Year:
2025,
Volume and Issue:
37(4)
Published: April 1, 2025
The
supercritical
carbon
dioxide
(S-CO2)
closed
Brayton
cycle
holds
significant
promise
for
revolutionizing
the
future
of
efficient
and
comprehensive
new
energy
utilization.
However,
compressor
operation
in
this
is
characterized
by
rapid
pressurization,
which
induces
substantial
fluctuations
temperature
pressure,
potentially
triggering
non-equilibrium
condensation
S-CO2.
This
phenomenon
disrupts
flow
field
within
compressor,
thereby
decreasing
overall
performance
system.
Therefore,
exploring
mechanism
great
significance
improving
work
summarizes
various
improvement
types
S-CO2
systems
engineering
applications
across
fields.
Subsequently,
it
reviews
development
theories
compressors,
focusing
on
nucleation
growth
models.
In
addition,
current
research
status
characteristics
under
high-speed
high-pressure
conditions
summarized,
based
convergent-divergent
nozzle
experiments
simulations.
systematically
progress
system
from
perspectives,
such
as
origin
technological
bottleneck,
nature
scientific
problem,
state
research.
By
reviewing
blade
humidity
control
method
condensation,
proposed
that
technology
active
multi-objective
coordination
should
be
direction
further
findings
analysis
can
provide
a
reference
design
blades
Language: Английский
Influence of Impurity Particles on Non-Equilibrium Condensation Flow Characteristics in Steam Turbine
Pengfei Hu,
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Mingyang Sun,
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Yiyuan Zhao
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et al.
Energy,
Journal Year:
2025,
Volume and Issue:
unknown, P. 135799 - 135799
Published: March 1, 2025
Language: Английский
Computational Fluid Dynamics Study of Erosion on 900 MW Steam Turbine ND-45 Blades Using 3D Scanning
Grzegorz Bzymek,
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Mateusz Bryk,
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Sylwia Kruk-Gotzman
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et al.
Materials,
Journal Year:
2024,
Volume and Issue:
17(19), P. 4884 - 4884
Published: Oct. 4, 2024
This
paper
presents
a
comprehensive
study
on
the
impact
of
erosion
flow
characteristics
through
blade
last
stage
900
MW
steam
turbine.
The
primary
objective
is
to
understand
how
surface
erosion,
caused
by
prolonged
exposure,
affects
behavior
and
overall
efficiency
class
research
process
began
with
3D
scan
turbine
blade,
using
advanced
laser
scanning
technology
create
detailed
geometric
model.
As
one
longest
blades
used
in
turbines,
it
posed
both
technical
challenge
was
an
innovative
aspect
this
study.
resulting
model
served
as
basis
for
numerical
simulations
Computational
Fluid
Dynamic
(CFD)
methods,
which
allowed
analysis
over
eroded
surface.
Key
parameters,
including
velocity,
pressure,
turbulence,
were
assessed
determine
erosion.
revealed
significant
changes
depending
degree
providing
valuable
insights
optimization
maintenance.
novelty
lies
not
only
use
technologies
but
also
analyzing
industrial
practice,
findings
that
could
enhance
inform
new
risk
management
strategies.
Language: Английский
Study on the vortex flow field and flow-induced noise characteristics of a submarine steam regulating valve
Qi Liu,
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Chao Guo,
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Hangbo Chen
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et al.
Flow Measurement and Instrumentation,
Journal Year:
2024,
Volume and Issue:
102, P. 102795 - 102795
Published: Dec. 15, 2024
Language: Английский
Thermal–Fluid–Structure Interaction Analysis of the Impact of Structural Modifications on the Stress and Flow Parameters in a Nozzle Box Made of StE460 Steel
Materials,
Journal Year:
2024,
Volume and Issue:
17(24), P. 6287 - 6287
Published: Dec. 23, 2024
This
study
explores
the
impact
of
structural
modifications
on
stress
distribution
and
flow
characteristics
a
nozzle
box
in
steam
turbine,
specifically
targeting
components
made
from
high-strength
StE460
steel.
Using
Computational
Fluid
Dynamics
(CFDs)
Thermal–Fluid–Structure
Interaction
(Thermal–FSI)
simulations,
we
examine
effects
shortening
guide
vanes
by
7
mm.
novel
approach
significantly
reduces
levels
within
segments,
bringing
them
below
critical
thresholds
thus
enhancing
component
durability.
Moreover,
modification
leads
to
improved
efficiency,
evidenced
higher
outlet
velocities,
temperatures,
mass
rates,
all
which
contribute
increased
turbine
power
output
without
negatively
impacting
downstream
dynamics.
balance
between
durability
performance
underscores
value
targeted
innovations
high-temperature,
high-stress
environments.
study’s
findings
suggest
that
such
can
substantially
improve
efficiency
operational
longevity,
marking
an
important
advancement
industrial
applications
where
reliability
are
paramount.
Future
work
will
assess
long-term
under
variable
conditions
further
optimize
these
benefits.
Language: Английский