Search Results for author: Kunihiko Taira

Found 7 papers, 5 papers with code

Phase autoencoder for limit-cycle oscillators

no code implementations28 Feb 2024 Koichiro Yawata, Kai Fukami, Kunihiko Taira, Hiroya Nakao

We present a phase autoencoder that encodes the asymptotic phase of a limit-cycle oscillator, a fundamental quantity characterizing its synchronization dynamics.

Time Series

Grasping Extreme Aerodynamics on a Low-Dimensional Manifold

1 code implementation13 May 2023 Kai Fukami, Kunihiko Taira

We reveal that the nonlinear vortical flow field over time and parameter space can be compressed to only three variables with a lift-augmented autoencoder while holding the essence of the original high-dimensional physics.

Distributed Control of Partial Differential Equations Using Convolutional Reinforcement Learning

1 code implementation25 Jan 2023 Sebastian Peitz, Jan Stenner, Vikas Chidananda, Oliver Wallscheid, Steven L. Brunton, Kunihiko Taira

We present a convolutional framework which significantly reduces the complexity and thus, the computational effort for distributed reinforcement learning control of dynamical systems governed by partial differential equations (PDEs).

reinforcement-learning Reinforcement Learning (RL)

Global field reconstruction from sparse sensors with Voronoi tessellation-assisted deep learning

1 code implementation3 Jan 2021 Kai Fukami, Romit Maulik, Nesar Ramachandra, Koji Fukagata, Kunihiko Taira

This reconstruction problem is especially difficult when sensors are sparsely positioned in a seemingly random or unorganized manner, which is often encountered in a range of scientific and engineering problems.

Super-Resolution

Probabilistic neural networks for fluid flow surrogate modeling and data recovery

1 code implementation8 May 2020 Romit Maulik, Kai Fukami, Nesar Ramachandra, Koji Fukagata, Kunihiko Taira

We consider the use of probabilistic neural networks for fluid flow surrogate modeling and data recovery.

Fluid Dynamics

Modal Analysis of Fluid Flows: An Overview

3 code implementations5 Feb 2017 Kunihiko Taira, Steven L. Brunton, Scott T. M. Dawson, Clarence W. Rowley, Tim Colonius, Beverley J. McKeon, Oliver T. Schmidt, Stanislav Gordeyev, Vassilios Theofilis, Lawrence S. Ukeiley

Simple aerodynamic configurations under even modest conditions can exhibit complex flows with a wide range of temporal and spatial features.

Fluid Dynamics

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