{"title":"Experimental and numerical investigation of the acoustic resonance mechanism of the heat exchanger tube","authors":"Sheng Tian, Guofeng Huang, Wei Tan","doi":"10.1016/j.ijheatfluidflow.2025.109838","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, the heat exchanger tube is simplified as a single cylinder and the acoustic resonance mechanism of the single cylinder is investigated by a combination of experiments and numerical simulations. It is found that the peak acoustic pressure during acoustic resonance reaches 5.53 Pa and the fluctuation velocity reaches 0.7 m/s for a cylinder with a diameter of 12 mm. At the same time, the onset of acoustic resonance is delayed as the diameter increases until a higher flow velocity is reached − from about 20.8 m/s for a cylinder with a diameter of 10 mm to 30 m/s for a cylinder with a diameter of 14 mm. Numerical simulations analysed the evolution of the flow field during acoustic resonance by adjusting the numerical boundary conditions. The results show that the perturbation amplitude has a significant effect on the lift coefficient at the cylinder surface. When a perturbation of 10 % of <em>U</em><sub>0</sub> is applied, the lift coefficient amplitude increases by 32.73 % compared to the undisturbed case.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"115 ","pages":"Article 109838"},"PeriodicalIF":2.6000,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Heat and Fluid Flow","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0142727X25000967","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, the heat exchanger tube is simplified as a single cylinder and the acoustic resonance mechanism of the single cylinder is investigated by a combination of experiments and numerical simulations. It is found that the peak acoustic pressure during acoustic resonance reaches 5.53 Pa and the fluctuation velocity reaches 0.7 m/s for a cylinder with a diameter of 12 mm. At the same time, the onset of acoustic resonance is delayed as the diameter increases until a higher flow velocity is reached − from about 20.8 m/s for a cylinder with a diameter of 10 mm to 30 m/s for a cylinder with a diameter of 14 mm. Numerical simulations analysed the evolution of the flow field during acoustic resonance by adjusting the numerical boundary conditions. The results show that the perturbation amplitude has a significant effect on the lift coefficient at the cylinder surface. When a perturbation of 10 % of U0 is applied, the lift coefficient amplitude increases by 32.73 % compared to the undisturbed case.
期刊介绍：
The International Journal of Heat and Fluid Flow welcomes high-quality original contributions on experimental, computational, and physical aspects of convective heat transfer and fluid dynamics relevant to engineering or the environment, including multiphase and microscale flows.
Papers reporting the application of these disciplines to design and development, with emphasis on new technological fields, are also welcomed. Some of these new fields include microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.
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