| 热声热机热声核内传热与流动特性实验研究 |
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| 引用本文： | 潘娜,沈超,汪双凤.热声热机热声核内传热与流动特性实验研究[J].工程热物理学报,2012(4):651-654. |
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| 作者姓名： | 潘娜 沈超 汪双凤 |
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| 作者单位： | 华南理工大学强化传热与过程节能教育部重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(No.51006038);中央高校基本科研业务费专项资金资助(No.2011ZM0045);表面功能结构先进制造广东普通高校重点实验室开放基金资助项目(No.SFS-KF201008) |
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| 摘 要： | 本文通过搭建扬声器驱动的热声热机可视化实验台,利用粒子成像测速仪(PIV)和红外热像仪得到冷、热端换热器间速度及温度场分布,对有无声场两种情况下热声核中速度及温度场的变化进行了实验研究。实验结果表明,外加声场改变了热声核中热对流的基本模式,增强了冷热端换热器间的换热能力,对热声核中的温度分布有着显著的影响。揭示了热声核中的流动与换热规律。
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| 关 键 词： | 热声热机 温度分布 速度场 PIV |
Experimental Study on the Flow and Heat Transfer Characteristics of the Thermoacoustic Core |
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| N Na,N Chao,ANG Shuang-Feng.Experimental Study on the Flow and Heat Transfer Characteristics of the Thermoacoustic Core[J].Journal of Engineering Thermophysics,2012(4):651-654. |
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| Authors: | N Na N Chao ANG Shuang-Feng |
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| Institution: | (Key Laboratory of Enhanced Heat Transfer and Energy Conservation Ministry of Education, South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | A visual thermoacoustic engine was built.The velocity and temperature fields between hot and cold heat exchangers were studied under two conditions with and without acoustic field using particle image velocimetry and thermal infrared imager.The experiment results show that the heat convection model was changed with the addition of acoustic,and heat transfer was enhanced under the disturbance of acoustic flow.The temperature and velocity distributions of thermoacoustic core were significantly affected by the acoustic.The flow and heat transfer characteristics of thermoacoustic core were analyzed. |
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| Keywords: | thermoacoustic engine temperature distribution velocity field PIV |
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