Integrating neural operators with diffusion models improves spectral representation in turbulence modelling
Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences,
Journal Year:
2025,
Volume and Issue:
481(2309)
Published: March 1, 2025
We
integrate
neural
operators
with
diffusion
models
to
address
the
spectral
limitations
of
in
surrogate
modelling
turbulent
flows.
While
offer
computational
efficiency,
they
exhibit
deficiencies
capturing
high-frequency
flow
dynamics,
resulting
overly
smooth
approximations.
To
overcome
this,
we
condition
on
enhance
resolution
structures.
Our
approach
is
validated
for
different
diverse
datasets,
including
a
high-Reynolds-number
jet-flow
simulation
and
experimental
Schlieren
velocimetry.
The
proposed
method
significantly
improves
alignment
predicted
energy
spectra
true
distributions
compared
alone.
This
enables
stabilize
longer
forecasts
through
diffusion-corrected
autoregressive
(AR)
rollouts,
as
demonstrate
this
work.
In
addition,
proper
orthogonal
decomposition
(POD)
analysis
demonstrates
enhanced
fidelity
space–time.
work
establishes
new
paradigm
combining
generative
advance
systems,
it
can
be
used
other
scientific
applications
that
involve
microstructure
content.
See
our
project
page:
vivekoommen.github.io/NO_DM
.
Language: Английский
Multi-head physics-informed neural networks for learning functional priors and uncertainty quantification
Journal of Computational Physics,
Journal Year:
2025,
Volume and Issue:
unknown, P. 113947 - 113947
Published: March 1, 2025
Language: Английский
A physics-informed neural network method for thermal analysis in laser-irradiated 3D skin tissues with embedded vasculature, tumor and gold nanorods
International Journal of Heat and Mass Transfer,
Journal Year:
2025,
Volume and Issue:
245, P. 126980 - 126980
Published: March 30, 2025
Language: Английский
Physics-based machine learning for computational fracture mechanics
Fadi Aldakheel,
No information about this author
Elsayed S. Elsayed,
No information about this author
Yousef Heider
No information about this author
et al.
Machine learning for computational science and engineering,
Journal Year:
2025,
Volume and Issue:
1(1)
Published: April 16, 2025
Abstract
This
study
introduces
a
physics-based
machine
learning
(
$$\phi
$$
ϕ
ML)
framework
for
modeling
both
brittle
and
ductile
fractures
in
elastic-viscoplastic
materials.
It
integrates
physical
principles,
including
governing
equations
constraints,
directly
into
the
neural
network
architecture.
Specifically,
feedforward
is
designed
to
embed
laws
within
its
architecture,
ensuring
thermodynamic
consistency.
Building
on
this
foundation,
synthetic
datasets
generated
from
finite
element-based
phase-field
fracture
simulations
are
employed
train
proposed
framework,
focusing
capturing
homogeneous,
one-dimensional
responses.
Detailed
analyses
performed
stored
elastic
energy
dissipated
work
due
plasticity
fracture,
demonstrating
capability
of
predict
essential
features.
The
ML
overcomes
shortcomings
classical
models,
which
rely
heavily
large
lack
guarantees
principles.
By
leveraging
physics-integrated
design,
demonstrates
exceptional
performance
predicting
key
properties
with
limited
training
data.
ensures
reliability,
efficiency,
consistency,
establishing
foundational
approach
integrating
computational
mechanics.
Language: Английский
Physics-Informed Neural Networks in Polymers: A Review
Polymers,
Journal Year:
2025,
Volume and Issue:
17(8), P. 1108 - 1108
Published: April 19, 2025
The
modeling
and
simulation
of
polymer
systems
present
unique
challenges
due
to
their
intrinsic
complexity
multi-scale
behavior.
Traditional
computational
methods,
while
effective,
often
struggle
balance
accuracy
with
efficiency,
especially
when
bridging
the
atomistic
macroscopic
scales.
Recently,
physics-informed
neural
networks
(PINNs)
have
emerged
as
a
promising
tool
that
integrates
data-driven
learning
governing
physical
laws
system.
This
review
discusses
development
application
PINNs
in
context
science.
It
summarizes
recent
advances,
outlines
key
methodologies,
analyzes
benefits
limitations
using
for
property
prediction,
structural
design,
process
optimization.
Finally,
it
identifies
current
future
research
directions
further
leverage
advanced
modeling.
Language: Английский