A multiscale computational framework using active learning to model complex suspension flows

Chang, Yu-Jen; Huang, Hsuan-Yu; Chern, Ruey-Lin; Chou, Yi-Ju

doi:10.1016/j.jcp.2023.112481

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2024

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Short Review on Machine Learning-Based Multi-Scale Simulation in Rheology

Miyamoto

2024

J. Soc. Rheol., Jpn

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We briefly review the machine-learning (ML) applications for rheological research, particularly on the multi-scale simulation (MSS) techniques for complex fluid flows. For such simulations, it is essential to accurately model the constitutive relation (i.e., the strain-rate and stress relation) of complex fluids. Several past studies have found that ML applications for modeling the constitutive relation can reasonably accelerate the flow predictions from a microscopically resolved description of complex fluids such as polymers and colloidal suspensions. Nevertheless, even when the proposed regression models are consistent with the physical knowledge, several outstanding questions remain to be answered, for example, how to ensure the robustness of the predictions. This review summarizes the methods to obtain constitutive models using ML techniques and those applications based on molecular and phenomenological knowledge. Furthermore, we provide a perspective on how to develop the ML framework starting from a microscopic description.

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