管内点声源声学特征对气固换热特性的影响  

Study on enhanced heat transfer characteristics of point sound source

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作  者:朱文祥 谭建伟[1] 康慧芳[1] 姜一帆 石中伟 沈俊 Zhu Wenxiang;Tan Jianwei;Kang Huifang;Jiang Yifan;Shi Zhongwei;Shen Jun(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Unit 32381 of the People’s Liberation Army of China,Beijing 100071,China)

机构地区:[1]北京理工大学机械与车辆学院,北京100081 [2]中国人民解放军32381部队,北京100071

出  处:《低温工程》2024年第2期54-60,共7页Cryogenics

基  金:国家重点研发计划项目(2022YFB3505103)。

摘  要:针对实际工程问题,采用点声源模型,使用Fluent软件对点声源强化传热性能进行仿真模拟研究,通过udf程序精确控制点声源的位置、振幅和频率,模拟实际工程问题中气体流动受到声波作用对换热性能的影响。结果表明,在前后管径发生突变的流道中,声源位置在管正中间时,传热系数相较无声波时提高477.3%。同时,强化换热效果随声波频率的增加先增加后减小,随振幅的增加而增加。For the actual engineering problems,the point sound source model was adopted,and Fluent software was used to carry out simulation research on the enhanced heat transfer performance of the point sound source,and the position,amplitude and frequency of the point sound source were accurately controlled through the udf program,so as to simulate the influence of the flow on heat transfer performance by the acoustic wave in the actual engineering problems.The results show that the heat transfer coefficient is increased by 477.3%when the sound source is lo-cated in the middle of the pipe in the flow channel where the diameter of the front and rear pipes changes abruptly,compared with that when there is no sound wave.Meanwhile,the enhanced heat transfer effect increases and then decreases with the increase of sound wave frequency,and increa-ses with the increase of amplitude.

关 键 词:点声源 强化传热 对流换热 

分 类 号:TB611[一般工业技术—制冷工程]

 

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