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Application of two-branch deep neural network to predict bubble migration near elastic boundaries

Authors :
Xiaojian Ma
Biao Huang
Chen Wang
Guoyu Wang
Source :
Physics of Fluids. 31:102003
Publication Year :
2019
Publisher :
AIP Publishing, 2019.

Abstract

Compared to the drawbacks of traditional experimental and numerical methods for predicting bubble migration, such as high experimental costs and complex simulation operations, the data-driven approach of using deep neural network algorithms can provide an alternative method. The objective of this paper is to construct a two-branch deep neural network (TBDNN) model in order to improve the high-fidelity bubble migration results and further reduce dependence on the quantity of experimental data. A TBDNN model is obtained by embedding the features of the Kelvin impulse into a basic deep neural network (BDNN) system. The results show that compared to the original BDNN model, TBDNN performs much better in accurately predicting bubble migration based on the same amount of training data. Using the TBDNN model, the critical condition of bubble oscillation at a fixed location can be detected under the influence of boundary properties (normalized stiffness and mass) and bubble standoff. Furthermore, the initial position of the bubble and normalized stiffness of boundaries have a positive correlation with bubble migration, whereas normalized mass has a negative impact. It was found that the normalized mass of boundaries plays the most important role in affecting bubble migration compared to the standoff and stiffness when using the method of variable sensitivity analysis.

Details

ISSN :
10897666 and 10706631
Volume :
31
Database :
OpenAIRE
Journal :
Physics of Fluids
Accession number :
edsair.doi...........361e3fed3c722f41652cdd2d05ad5c17