再生器マトリックス中の圧力損失および流速分布に及ぼす出入口面積の影響

概要

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In order to examine the effect of entrance and exit areas on the velocity distribution in the stacked wire gauzes which are the most familiar regenerator matrices of Stirling cycle machines, the pressure drop across it and the velocity distribution at its exit have been measured for different mesh numbers, flow rates, entrance areas, exit areas and stack thicknesses. The results show that the effective flow area ratio which is an index for the uniformity of the velocity distribution is independent of the mesh number and the Reynolds number but dependent on the entrance and exit areas and the stack thickness. In addition, a simple theoretical flow model has been led based on the isotropy of the friction factor which is confirmed by the measurement of axial and radial friction factors. The calculation using this model brings such an effective flow area ratio and a velocity distribution as agree well with experimental ones.
社団法人日本機械学会の論文
1998-08-25