垂直管を流れる気液二相流の発生する音に関する研究

抄録

Estimation of two-phase flow regime was studied by using sound data which were taken from the flow through vertical pipe made of acrylic in the anechoic box. The sound data was classified into four flow regime based on the video data. The effective sound pressure of two-phase flow could show the features in each flow, almost these features existed in low water flow rate. By using frequency spectrum analysis, two-phase flow could be classified into other three kinds of flow regime. These are gas phase and liquid phase are continuous, gas phase and liquid phase are discontinuous, and gas phase is discontinuous and liquid phase is discontinuous. The flow regime that gas phase and the liquid phase is discontinuous contains a slug flow and churn flow.