Physics-Informed Deep Learning for Computational Fluid Flow Analysis

Physics-Informed Deep Learning for Computational Fluid Flow Analysis: Coupling of physics-informed neural networks and autoencoders for aerodynamic flow predictions on variable geometries

Kakkar, Samarth (TU Delft Mechanical, Maritime and Materials Engineering)

Pecnik, R. (mentor)
Möller, M. (mentor)
Jennings, William (mentor)

Delft University of Technology

2022-08-24

The main objective of this thesis was to explore the capabilities of neural networks in terms of representing governing differential equations, primarily in the purview of fluid/aero dynamic flows. The governing differential equations were accommodated within the loss functions for training the neural networks, thereby making them 'physics-informed'. Subsequently, this idea of physics-informed neural networks (PINNs) was extended to parameterized geometries generated with the help of commercial auto-encoders developed by the UK based company Monolith AI pvt. ltd. because neural networks have the capability to learn the desired PDEs over variable/parameterized geometries without the need to recompute the solution for every minor change in the input geometry, which proves out to be a huge advantage over classical numerical techniques. The advantages, limitations and scope for further research in the field of physics-informed deep learning have been discussed in the contents of the underlying thesis report.

Physics Informed Neural Networks
Fluid dynamics
Scientific Machine Learning
Airfoils
Poisson equation
Operator Learning

http://resolver.tudelft.nl/uuid:d1e1b3d9-43d3-442d-bce5-f261049898b7

Student theses

master thesis

© 2022 Samarth Kakkar