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题名A unified heat transfer model for gas-liquid two-phase mixing process in a rectangular channel based on steady status identification
作者
发表日期2024-01-05
发表期刊Applied Thermal Engineering
ISSN/eISSN1359-4311
卷号236
摘要

Gas-liquid two-phase flow in rectangular channels involves thermal energy, chemical industry, and other fields. However, it is difficult to identify steady flow status and unify heat transfer model owing to the changeable mixing process and the complex industrial environment. In this work, the time series decomposition technique (i.e., variational mode decomposition) and neural network algorithm (i.e., long short-term memory) are employed to identify the steady flow pattern of the gas-liquid mixing process in vertical rectangular channels. The heat transfer model of a single bubble in a rectangular channel is established based on the geometrical characteristics of the bubble. Results demonstrate that a 30-dimensional feature vector is extracted from the conductivity time series for flow pattern recognition. The feature parameters of each intrinsic mode function are period, minimum, maximum, standard deviation, skewness, and kurtosis. Average accuracy of the new model is 94.58% with the highest at 95.83% and the proposed new model improves the recognition accuracy of steady flow pattern by 2.54–6.93% compared with other models adopted in this work. The precision of the new hybrid model is the highest while the number of decomposition layers for the conductivity time series is 5 and the bubble flow exhibits the largest heat transfer area under the same conditions. The proposed hybrid model can be used to enhance the identification accuracy of bubble flow in rectangular channels, contributing to curtailing unneeded flow patterns in industrial processes. The heat transfer model of a single bubble can provide a unified and convenient method for calculating industrial heat transfer. These findings provide a useful guideline for engineering design and energy-saving in the fields of thermal energy and chemical industry.

关键词Flow status Gas-liquid Heat transfer model Rectangular channel VMD-LSTM
DOI10.1016/j.applthermaleng.2023.121612
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收录类别SCIE
语种英语English
WOS研究方向Thermodynamics ; Energy & Fuels ; EngineeringMechanics
WOS类目Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:001081755500001
Scopus入藏号2-s2.0-85171580507
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://repository.uic.edu.cn/handle/39GCC9TT/11064
专题北师香港浸会大学
通讯作者Wang, Hua; Xiao, Qingtai
作者单位
1.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming,Yunnan,650093,China
2.Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,Yunnan,650093,China
3.School of Ecology,Environment and Resources,Guangdong University of Technology,Guangzhou,Guangdong,510006,China
4.Department of Management Science and Statistics,The University of Texas at San Antonio,San Antonio,78249-0634,United States
5.Faculty of Science and Technology,BNU-HKBU United International College,Zhuhai,Guangdong,519087,China
推荐引用方式
GB/T 7714
Yang, Kai,Wang, Yelin,Wang, Minet al. A unified heat transfer model for gas-liquid two-phase mixing process in a rectangular channel based on steady status identification[J]. Applied Thermal Engineering, 2024, 236.
APA Yang, Kai, Wang, Yelin, Wang, Min, Pan, Jianxin, Wang, Hua, & Xiao, Qingtai. (2024). A unified heat transfer model for gas-liquid two-phase mixing process in a rectangular channel based on steady status identification. Applied Thermal Engineering, 236.
MLA Yang, Kai,et al."A unified heat transfer model for gas-liquid two-phase mixing process in a rectangular channel based on steady status identification". Applied Thermal Engineering 236(2024).
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