0714 メッシュシート積層型蓄熱器の熱音響特性の実験的評価(OS7-3 流れと音,オーガナイズドセッション)

概要

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The experimental evaluation of the attenuation rate of acoustic power in stacked-screen regenerators is described. First, a two-by-two transfer matrix of a stacked-screen regenerator was estimated from pressure measurements performed at four different positions; then, the attenuation rate of acoustic power in the regenerator were evaluated using a "capillary-tube-based" theory that models a stacked-screen regenerator as an array of pores having a uniform cross section. By using the experimental result, the radius of the circular cross section of the tubes comprising the modeled stacked-screen regenerators was estimated. Further, by using the obtained radius, the attenuation rate in the differentially heated regenerator was evaluated.
一般社団法人日本機械学会の論文
2009-11-06