MultiShape: A Spectral Element Method, with Applications to Dynamic Density Functional Theory and PDE-Constrained Optimization

07/12/2022
by   Jonna C. Roden, et al.
0

A numerical framework is developed to solve various types of PDEs on complicated domains, including steady and time-dependent, non-linear and non-local PDEs, with different boundary conditions that can also include non-linear and non-local terms. This numerical framework, called MultiShape, is a class in Matlab, and the software is open source. We demonstrate that MultiShape is compatible with other numerical methods, such as differential–algebraic equation solvers and optimization algorithms. The numerical implementation is designed to be user-friendly, with most of the set-up and computations done automatically by MultiShape and with intuitive operator definition, notation, and user-interface. Validation tests are presented, before we introduce three examples motivated by applications in Dynamic Density Functional Theory and PDE-constrained optimization, illustrating the versatility of the method.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
05/18/2021

PDE-constrained Models with Neural Network Terms: Optimization and Global Convergence

Recent research has used deep learning to develop partial differential e...
research
07/08/2021

MOD-Net: A Machine Learning Approach via Model-Operator-Data Network for Solving PDEs

In this paper, we propose a model-operator-data network (MOD-Net) for so...
research
05/07/2022

Deep learning approximations for non-local nonlinear PDEs with Neumann boundary conditions

Nonlinear partial differential equations (PDEs) are used to model dynami...
research
04/01/2022

Computational stability analysis of PDEs with integral terms using the PIE framework

The Partial Integral Equation (PIE) framework was developed to computati...
research
10/05/2022

Boundary-safe PINNs extension: Application to non-linear parabolic PDEs in counterparty credit risk

The goal of this work is to develop deep learning numerical methods for ...
research
03/01/1999

An Algebraic Programming Style for Numerical Software and its Optimization

The abstract mathematical theory of partial differential equations (PDEs...
research
12/23/2022

Convexification Numerical Method for a Coefficient Inverse Problem for the Riemannian Radiative Transfer Equation

The first globally convergent numerical method for a Coefficient Inverse...

Please sign up or login with your details

Forgot password? Click here to reset