Physics-informed deep learning for modelling particle aggregation and breakage processes
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Accepted Version
Date
2021-07-09
Authors
Chen, Xizhong
Wang, Li Ge
Meng, Fanlin
Luo, Zheng-hong
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier B.V.
Published Version
Abstract
Particle aggregation and breakage phenomena are widely found in various industries such as chemical, agricultural and pharmaceutical processes. In this study, a physics-informed neural network is developed for solving both the forward and inverse problems of particle aggregation and breakage processes. In this method, the population balance equation is directly embedded in the loss function of a neural network so that the network can be trained efficiently and fulfil physical constraints. For the forward problems, solutions of population balance equations are obtained through the optimization of the neural network where the predictions well match the analytical solutions. In the inverse modelling, the data-driven discovery of model parameters of population balance equations is investigated. The sensitivity regarding the selection of different neural network structures is also investigated. The developed population balance equations embedded with neural network approach is promising for solving inverse problems of particle aggregation and breakage processes with noisy observation data.
Description
Keywords
Aggregation , Breakage , Inverse problem , Parameter estimation , Physics-informed neural network , Population balance equation
Citation
Chen, X., Wang, L. G., Meng, F. and Luo, Z.-h. (2021) 'Physics-informed deep learning for modelling particle aggregation and breakage processes', Chemical Engineering Journal. doi: 10.1016/j.cej.2021.131220