Machine Learning in Fluid Flow and Heat Transfer

A special issue of Fluids (ISSN 2311-5521). This special issue belongs to the section "Mathematical and Computational Fluid Mechanics".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 3137

Special Issue Editors


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Guest Editor
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: convective flow and heat transfer; thermal management and protection

E-Mail Website
Guest Editor
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: computational heat transfer; thermal control; machine learning
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Special Issue Information

Dear Colleagues,

Flow and heat transfer phenomena widely exist in industry and nature. Recently, researchers have been able to obtain high-precision physical fields by computational and experimental techniques, which has helped further our understanding of the mechanisms and guide engineering design. Through decades of studies, although people have accumulated myriad computational and experimental data, when working on new problems, even similar problems with different conditions, it is usually still necessary to re-simulate or re-experiment. In recent years, deep learning has demonstrated great ability to extract features from, and thus accurately predicting, physical fields, and prediction speed by deep learning is usually several orders of magnitude higher. Furthermore, attributed to the strong nonlinear feature extraction capability of deep learning, deep reinforcement learning is shedding light on solving flow and heat transfer control problems under complex conditions.

This Special Issue aims to collect the latest advances in artificial intelligence-coupled reactive fluids, heat transfer, and flow control, including (but not limited to) deep learning-based dimensional reduction models, physics-informed neural networks, and deep reinforcement learning of heat transfer and flow control.

Prof. Dr. Hongbin Yan
Prof. Dr. Wei-Tao Wu
Guest Editors

Manuscript Submission Information

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Keywords

  • deep learning
  • reinforcement learning
  • fluid flow
  • heat transfer
  • flow and heat transfer control
  • optimization
  • artificial intelligence

Published Papers (1 paper)

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12 pages, 4700 KiB  
Article
Deep Learning Forecasts a Strained Turbulent Flow Velocity Field in Temporal Lagrangian Framework: Comparison of LSTM and GRU
by Reza Hassanian, Ásdís Helgadóttir and Morris Riedel
Fluids 2022, 7(11), 344; https://doi.org/10.3390/fluids7110344 - 3 Nov 2022
Cited by 9 | Viewed by 2037
Abstract
The subject of this study presents an employed method in deep learning to create a model and predict the following period of turbulent flow velocity. The applied data in this study are extracted datasets from simulated turbulent flow in the laboratory with the [...] Read more.
The subject of this study presents an employed method in deep learning to create a model and predict the following period of turbulent flow velocity. The applied data in this study are extracted datasets from simulated turbulent flow in the laboratory with the Taylor microscale Reynolds numbers in the range of 90 < Rλ< 110. The flow has been seeded with tracer particles. The turbulent intensity of the flow is created and controlled by eight impellers placed in a turbulence facility. The flow deformation has been conducted via two circular flat plates moving toward each other in the center of the tank. The Lagrangian particle-tracking method has been applied to measure the flow features. The data have been processed to extract the flow properties. Since the dataset is sequential, it is used to train long short-term memory and gated recurrent unit model. The parallel computing machine DEEP-DAM module from Juelich supercomputer center has been applied to accelerate the model. The predicted output was assessed and validated by the rest of the data from the experiment for the following period. The results from this approach display accurate prediction outcomes that could be developed further for more extensive data documentation and used to assist in similar applications. The mean average error and R2 score range from 0.001–0.002 and 0.9839–0.9873, respectively, for both models with two distinct training data ratios. Using GPUs increases the LSTM performance speed more than applications with no GPUs. Full article
(This article belongs to the Special Issue Machine Learning in Fluid Flow and Heat Transfer)
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