Experimental testing of the flow resistance and thermal conductivity of porous materials for regenerators
Experimental testing of the flow resistance and thermal conductivity of porous materials for regenerators
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蓄热室多孔材料流阻和导热系数实验测试
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
A. Jaworski
中科院分区：
文献类型：
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作者：
Zhibin Yu;F. M. Saat;A. Jaworski
本文将着重对几种不同的不锈钢网筛进行流阻和导热系数的实验测试，这些网筛有望用作热声装置中的回热材料。流阻试验在稳定流和振荡流两种条件下进行。因此，在这两种情况下的摩擦因数得到并进行比较。测量结果表示为范宁摩擦因子与雷诺数之间的关联式。随后将这些数据与Kays和伦敦的数据进行了比较，这些数据最初用于稳定流，并且仅使用有限数量的样品，但是仍然广泛用于设计采用振荡流条件的装置。在本研究中还使用标准方法（即ASTM E1225测试方法）测量了蓄热器材料的热导率。结果表示为热导率降解因子（TCDF）。的结果，并详细讨论。
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In this paper, we will focus on the experimental testing of flow resistance and thermal conductivity of several different stainless steel mesh screens which are expected to be used as regenerator material in thermoacoustic devices. The flow resistance test was conducted in both steady and oscillatory flow conditions. Therefore, the friction factor in both of these conditions were obtained and compared. The measured results were expressed as the correlation between Fanning friction factor and Reynolds number. These were subsequently compared to Kays and London’s data, originally taken for a steady flow of and using only a limited number of samples, but nevertheless widely used in designing devices employing oscillatory flow conditions. The thermal conductivity of the regenerator materials was also measured in this study using a standard method (i.e. ASTM E1225 Test Method). The results were expressed as a thermal conductivity degradation factor (TCDF). The results are presented and discussed in detail.
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