204 ケーシング壁における自己循環機構が軸流送風機の性能に与える影響(OS3-(1)オーガナイズドセッション《熱・流体・エネルギー変換工学の進展》)

概要

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An axial-flow fan causes anomalous phenomena such as rotating stall and surging. From past researches, it has been found that casing treatments are effective in order to avoid these anomalous phenomena. The aim of this study is to verify effect of a self-circulation on the performance of an axial-flow fan. In this paper, the correlations between discharge and pressure, discharge and efficiency for total pressure are shown in each case of casing treatments. It is found that the casing treatment with holes is effective to delay the stall point and self-circulation is effective from the viewpoint of efficiency for total pressure. It is suggested that the self-circulation is preferred as long as both delaying stall point and efficiency for total pressure should be concerned.
一般社団法人日本機械学会の論文
2011-08-26