Shallow neural networks for fluid flow reconstruction with limited sensors
Abstract
In many applications, it is important to reconstruct a fluid flow field, or some other high-dimensional state, from limited measurements and limited data. In this work, we propose a shallow neural network-based learning methodology for such fluid flow reconstruction. Our approach learns an end-to-end mapping between the sensor measurements and the high-dimensional fluid flow field, without any heavy preprocessing on the raw data. No prior knowledge is assumed to be available, and the estimation method is purely data-driven. We demonstrate the performance on three examples in fluid mechanics and oceanography, showing that this modern data-driven approach outperforms traditional modal approximation techniques which are commonly used for flow reconstruction. Not only does the proposed method show superior performance characteristics, it can also produce a comparable level of performance to traditional methods in the area, using significantly fewer sensors. Thus, the mathematical architecture is ideal for emerging global monitoring technologies where measurement data are often limited.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 01, 2020
- Source ID
- 10.1098/rspa.2020.0097
Entities
People
- J. Nathan Kutz
- Lionel Mathelin
- Michael W. Mahoney
- N Benjamin Erichson
- Steven Brunton
- Zhewei Yao
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Direction générale de l'Armement
- Paris-Saclay University
- University of Washington