An Accurate Experimental Determination of Interstitial Heat Transfer Coefficients of Ceramic Foams Using the Single Blow Method

K. Ando, H. Hirai, Y. Sano
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引用次数: 21

Abstract

An exhaustive experimental investigation has been carried out for accurate determination of interstitial heat transfer coefficients of ceramic foams in forced convective flows. The single-blow method was used, in which, the fluid temperature varies with time and convective heat transfer becomes time-dependent. The method results in a transient and conjugate heat transfer phenomena between the foam and fluid. These transient temperature data are then compared with the theoretical results to obtain the corresponding interstitial heat transfer coefficients between the fluid and foam solid surface. The interstitial coefficients thus determined are compared against available sets of experimental data, so as to ex- amine the consistency among the reported experimental data.
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用单吹法精确测定陶瓷泡沫间隙传热系数的实验研究
为精确测定陶瓷泡沫在强制对流流动中的间隙换热系数,进行了详尽的实验研究。采用单吹法,流体温度随时间变化,对流换热随时间变化。该方法导致泡沫和流体之间的瞬态和共轭传热现象。然后将这些瞬态温度数据与理论结果进行比较,得到相应的流体与泡沫固体表面之间的间隙换热系数。将由此确定的间隙系数与现有的实验数据进行比较,以检验所报告的实验数据之间的一致性。
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