A-30 流体自身の流れで吸引力を制御する渦室付排水管の研究 : (第4報)流れ状態の変化に伴う吸引力の動的応答性

抄録

In this study, a new drainpipe with vortex chamber was developed in order to free from danger of engulfing human body in the drain port of swimming pool. The drainpipe can control the suction force with the working of vortex flow. This paper deals with the dynamic response of suction force caused by the change of flow. At first, the dynamic responses are experimentally investigated by using small size drainpipe. Then a technical method based on the analogy between fluid-system and electric-circuit is described to predict the response of large drainpipe for practical use.