Journal
AICHE JOURNAL
Volume 68, Issue 6, Pages -Publisher
WILEY
DOI: 10.1002/aic.17695
Keywords
artificial intelligence; computational fluid dynamics; fluid mechanics
Categories
Funding
- National Institute of General Medical Sciences [R35GM137966]
- National Science Foundation [1547580]
- Office of Advanced Cyberinfrastructure (OAC)
- Direct For Computer & Info Scie & Enginr [1547580] Funding Source: National Science Foundation
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Computational fluid dynamics (CFD) analysis is widely used in chemical engineering. In this study, active learning (AL) and symbolic regression (SR) are combined to obtain symbolic equations for system variables from CFD simulations. This scalable approach is applicable for any desired number of CFD design parameters.
Computational fluid dynamics (CFD) analysis is widely used in chemical engineering. Although CFD calculations are accurate, the computational cost associated with complex systems makes it difficult to obtain empirical equations between system variables. Here, we combine active learning (AL) and symbolic regression (SR) to get a symbolic equation for system variables from CFD simulations. Gaussian process regression-based AL allows for automated selection of variables by selecting the most instructive points from the available range of possible parameters. The results from these experiments are then passed to SR to find empirical symbolic equations for CFD models. This approach is scalable and applicable for any desired number of CFD design parameters. To demonstrate the effectiveness, we use this method with two model systems. We recover an empirical equation for the pressure drop in a bent pipe and a new equation for predicting backflow in a heart valve under aortic insufficiency.
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