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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer enhancement by acoustic streaming in a closed cylindrical enclosure filled with water
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Heat transfer enhancement by acoustic streaming in a closed cylindrical enclosure filled with water

机译：通过在充满水的密闭圆柱形外壳中进行声流增强传热

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摘要

Heat transfer enhancement in presence of acoustic streaming in a closed cylindrical enclosure filled with water on a down-ward-facing horizontal heating surface was measured experimentally. Acoustic streaming is induced by the vibration of the lower plate by means of an ultrasonic Bolted Langevin transducer. Standing wave was generated between a large heating source as a reflector and the vibrating plate. The upper plate was heated with a constant heat flux and side-walls were kept at the constant temperature. Therefore, the gravitational effects on the flow fields were negligible in this study and the heat transfer enhancement was due to vibrations. The effects of the transducer power, the height of the heater above the vibrating plate and the heat flux of the heater were considered separately in these measurements. The results show that the enhancement of the heat transfer between the heat source and the bulk water near the vibrating plate can be up to 390% with the acoustic streaming generated by the ultrasonic vibrations. The increase in the transducer power and the decrease in the height of the heater cause the higher heat transfer coefficient in the enclosure.
机译：实验地测量了在朝下的水平加热表面上充满水的密闭圆柱形外壳中，在存在声流的情况下传热增强。借助超声波Boltted Langevin换能器，由于下板的振动而引起声流。在作为反射器的大型加热源与振动板之间产生了驻波。用恒定的热通量加热上板，并将侧壁保持在恒定的温度。因此，在这项研究中重力对流场的影响可以忽略不计，而传热的增强是由于振动。在这些测量中，分别考虑了换能器功率，加热器在振动板上的高度以及加热器的热通量的影响。结果表明，在超声振动产生的声流作用下，振动板附近的热源与大量水之间的传热增强可达390％。换能器功率的增加和加热器高度的减小导致外壳中较高的热传递系数。

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  • 来源
  • 作者

    B. Tajik; A. Abbassi; M. Saffar-Awal; A. Abdullah; H. Mohammad-Abadi;

  • 作者单位

    Department of Mechanical Engineering, Amirkabir University of Technology, P.O. Box 15916-34311, Tehran, Iran;

    Department of Mechanical Engineering, Amirkabir University of Technology, P.O. Box 15916-34311, Tehran, Iran;

    Department of Mechanical Engineering, Amirkabir University of Technology, P.O. Box 15916-34311, Tehran, Iran;

    Department of Mechanical Engineering, Amirkabir University of Technology, P.O. Box 15916-34311, Tehran, Iran;

    Department of Mechanical Engineering, Amirkabir University of Technology, P.O. Box 15916-34311, Tehran, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    heat transfer enhancement; acoustic streaming; standing wave; cylindrical enclosure; ultrasonic;

    机译：传热增强;声音流驻波圆柱形外壳超音波;

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