Mapping Network-Coordinated Stacked Gated Recurrent Units for Turbulence Prediction

Document Type

Article

Publication Date

6-1-2024

Abstract

Accurately predicting fluid forces acting on the surface of a structure is crucial in engineering design. However, this task becomes particularly challenging in turbulent flow, due to the complex and irregular changes in the flow field. In this study, we propose a novel deep learning method, named mapping network-coordinated stacked gated recurrent units (MSU), for predicting pressure on a circular cylinder from velocity data. Specifically, our coordinated learning strategy is designed to extract the most critical velocity point for prediction, a process that has not been explored before. In our experiments, MSU extracts one point from a velocity field containing 121 points and utilizes this point to accurately predict 100 pressure points on the cylinder. This method significantly reduces the workload of data measurement in practical engineering applications. Our experimental results demonstrate that MSU predictions are highly similar to the real turbulent data in both spatio-temporal and individual aspects. Furthermore, the comparison results show that MSU predicts more precise results, even outperforming models that use all velocity field points. Compared with state-of-the-art methods, MSU has an average improvement of more than 45% in various indicators such as root mean square error (RMSE). Through comprehensive and authoritative physical verification, we established that MSU's prediction results closely align with pressure field data obtained in real turbulence fields. This confirmation underscores the considerable potential of MSU for practical applications in real engineering scenarios. The code is available at https://github.com/zhangzm0128/MSU.

Identifier

85195079061 (Scopus)

Publication Title

IEEE/CAA Journal of Automatica Sinica

External Full Text Location

https://doi.org/10.1109/JAS.2024.124335

e-ISSN

23299274

ISSN

23299266

First Page

1331

Last Page

1341

Issue

6

Volume

11

Grant

CE19-A-01

Fund Ref

State Key Laboratory for Disaster Reduction in Civil Engineering

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