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- W3174267879 abstract "Determining the empirical coefficient and correlation used in phase change model (such as Lee model and empirical correlation model) is one of challenges for the simulation of two-phase flow. To solve this issue in simulation of bubble condensation using volume of fluid (VOF) method, a new phase change model is developed by coupling Lee model and machine learning method, and is termed as ANN-Lee model in this study. The formulation of the empirical coefficient in Lee model is derived based on energy conservation equation. By learning from data collected from previous experiments or generated by empirical correlations, an artificial neural network (ANN) model is trained to calculate the empirical coefficient in each simulation time step. In verified cases of bubble condensation, the ANN-Lee model well predicts the bubble condensation process without concern for the selection of empirical coefficient or correlation in the phase change model. Even using coarse mesh, it can still achieve a comparably accurate prediction as the fine-mesh case. The present simulation results support the feasibility of applying machine learning method for improving the computational fluid dynamics (CFD) prediction of two-phase flow with phase change." @default.
- W3174267879 created "2021-07-05" @default.
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- W3174267879 date "2021-10-01" @default.
- W3174267879 modified "2023-10-14" @default.
- W3174267879 title "A machine-learning based phase change model for simulation of bubble condensation" @default.
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- W3174267879 doi "https://doi.org/10.1016/j.ijheatmasstransfer.2021.121620" @default.
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