Novel Sealing Design for High-Speed Coolant Pumps: Impact on Energy Performance, Axial Thrust and Flow Field
Energy,
Год журнала:
2025,
Номер
unknown, С. 135511 - 135511
Опубликована: Март 1, 2025
Язык: Английский
Research on energy loss mechanism of the cooling pump for new energy vehicles
Applied Thermal Engineering,
Год журнала:
2025,
Номер
unknown, С. 126949 - 126949
Опубликована: Май 1, 2025
Язык: Английский
Experimental Investigation of the Impact of Blade Number on Energy Performance and Pressure Fluctuation in a High-Speed Coolant Pump for Electric Vehicles
Energy,
Год журнала:
2024,
Номер
unknown, С. 133925 - 133925
Опубликована: Ноя. 1, 2024
Язык: Английский
An advanced Polynomial Chaos Expansion method for sensitivity analysis of aero-engine fuel gear pumps
Physics of Fluids,
Год журнала:
2024,
Номер
36(7)
Опубликована: Июль 1, 2024
Global
sensitivity
analysis
plays
an
important
role
in
robustness
optimization
design
of
aero-engine
fuel
gear
pumps
to
investigate
how
input
parameters
uncertainties
contribute
performances
uncertainties.
In
this
paper,
inspired
by
the
Leave-One-Out
method,
advanced
Polynomial
Chaos
Expansion
(PCE)
method
equipped
with
Adaptive
both
training
Points
and
polynomial
Order,
denoted
as
APO-PCE,
is
proposed
efficiently
estimate
variance-based
indices.
A
novel
active
learning
strategy
developed
for
identifying
optimal
candidate
sample
point
adaptively
points
simultaneously
update
order.
Input
parameters,
including
rotational
speed,
inlet
pressure,
outlet
tip
clearance,
are
reasonably
characterized
nine
convenient
sampling
Gaussian
variables
probabilistic
modeling
Karhuben–Loève
expansion.
The
results
show
that
APO-PCE
superior
classical
PCE
pressure
main
factors
supply
flow
field
characteristics,
while
clearance
uncertainty
only
affects
loss
at
lower
speed.
Язык: Английский
Numerical Study on Pressure Fluctuation in Electric Coolant Pump
Journal of Physics Conference Series,
Год журнала:
2024,
Номер
2854(1), С. 012049 - 012049
Опубликована: Окт. 1, 2024
Abstract
Adjusting
the
flow
rate
of
an
electronic
coolant
pump
(ECP)
over
a
wide
range
can
cause
significant
internal
pressure
fluctuations,
leading
to
vibration
and
noise.
This
study
uses
numerical
simulation
compare
fluctuations
at
backflow
orifice
within
impeller
ECP
various
rates.
The
creates
periodic
disturbances
in
inlet
region.
As
increases,
axial
influence
on
decreases,
reducing
amplitude
by
up
7.9%.
characteristic
frequencies
include
blade
passing
frequency
its
first
harmonic.
Within
impeller,
fluctuation
increases
with
both
direction
rate,
encompassing
rotational
frequency,
BPF,
At
low
rates,
overall
variation
inside
shows
opposite
trend
compared
design
high
impact
is
significantly
smaller
than
other
offers
insights
that
help
optimize
enhance
their
operational
performance.
Язык: Английский