サイクロン状渦室を有する排水管の研究開発 : 渦室内旋回流動場における突起状リングと流れ特性に関する一知見

概要

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We developed a new drainpipe with vortex chamber in order to free from the danger of getting caught indrain of swimming pool. This new drainpipe can control the suction force with the working of vortex flow. Inthis study, we tried to reduce the suction force by using the ring which was attached on the side wall of the vortexchamber to prevent secondary flow. This trial was not successful, but another interesting characteristic wasfound by the analysis of experimental data. That is to say, it is reasonable to think that the flow should be reducedby the ring, but in this experiment any rings do not affect the flow rate of the drainpipe. This result is very attractive, so we show the experimental results and consider the result from some angle.