Integrating Machine Learning with Numerical Methods for Complex PDEs

The recent developments in the research area of numerical methods and computational techniques have shown a significant shift towards integrating machine learning with traditional computational methods. This trend is evident in the use of Physics-Informed Neural Networks (PINNs) for solving inverse problems and complex PDEs, which demonstrates a novel approach to incorporating physical laws into neural network training. Additionally, there is a growing focus on developing adaptive and robust numerical schemes that can handle multiscale and nonlinear problems efficiently. For instance, the introduction of entropy-stable neural networks and adaptive neural network basis methods highlights advancements in ensuring stability and accuracy in long-term simulations. Furthermore, the field is witnessing innovations in mesh-free and mesh-based methods, with notable improvements in computational efficiency and conservation properties. The integration of optimal transport techniques and the development of new finite element methods tailored for specific problems, such as those with variable viscosity, underscore the continued evolution and specialization of numerical methods. Notably, the use of generative models in Bayesian inference for data assimilation in geophysical fluid dynamics represents a cutting-edge application of machine learning in enhancing the predictive capabilities of numerical simulations.

Noteworthy Papers:

  • The use of Physics-Informed Neural Networks for frictionless contact problems under large deformation showcases a robust framework for complex engineering applications.
  • The introduction of an Asymptotic-Preserving Random Feature Method for multiscale radiative transfer equations demonstrates significant computational advantages and robustness across different scales.

Sources

Conditional quasi-optimal error estimate for a finite element discretization of the $p$-Navier-Stokes equations: The case $p>2$

Active flux methods for hyperbolic conservation laws -- flux vector splitting and bound-preservation

A Semi-Discrete Optimal Transport Scheme for the 3D Incompressible Semi-Geostrophic Equations

Neural Inverse Source Problems

Entropy stable conservative flux form neural networks

Adaptive neural network basis methods for partial differential equations with low-regular solutions

Fully consistent lowest-order finite element methods for generalised Stokes flows with variable viscosity

Rate of convergence of a semi-implicit time Euler scheme for a 2D B\'enard-Boussinesq model

New random projections for isotropic kernels using stable spectral distributions

A stabilized nonconforming finite element method for the surface biharmonic problem

Adjoint lattice kinetic scheme for topology optimization in fluid problems

A robust first order meshfree method for time-dependent nonlinear conservation laws

Energy-based physics-informed neural network for frictionless contact problems under large deformation

An efficient scheme for approximating long-time dynamics of a class of non-linear models

Inexact block LU preconditioners for incompressible fluids with flow rate conditions

Bayesian inference for geophysical fluid dynamics using generative models

Uniformly higher order accurate schemes for dynamics of charged particles under fast oscillating magnetic fields

Compatible finite element interpolated neural networks

A Micro-Macro Decomposition-Based Asymptotic-Preserving Random Feature Method for Multiscale Radiative Transfer Equations

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