水平二维肋管间降膜流型转变的实验分析与预测模型Experimental analysis and predictive model of falling film flow pattern transition betweem horizontal two-dimensional finned tubes
陈敬东,高蓬辉,郭晓超,石磊
摘要(Abstract):
降膜换热器内水平管间形成的不同流型会对换热器的传热、传质性能产生影响。为准确预测管间不同流型转变的问题,文中设计并搭建了水平二维肋管间降膜流动系统,基于实验结果,采用机器学习的研究方法,建立了综合考虑管间距和肋结构影响因素的管间流型预测模型。研究结果表明,该模型预测值与实验值之间的偏差可以控制在±20%以内;相较于文献中的传统模型,机器学习模型在预测准确性方面展现出显著优势。研究成果为后续降膜流型预测模型的发展提供了新的参考依据。
关键词(KeyWords): 水平二维肋管;降膜流型转变雷诺数;机器学习;预测模型
基金项目(Foundation): 中国博士后科学基金(2023M743764);中国博士后科学基金(2024M761698);; “清华大学恒隆房地产研究中心”资助项目
作者(Author): 陈敬东,高蓬辉,郭晓超,石磊
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