Abstract
Identification method of flow pattern was studied by using sound data which were taken and analyzed to flow through pipe. Sound data of two-phase flow were taken on flow through vertical pipe. Five kinds of flow pattern were made for sound data and analyzed. Frequency spectrums could show the features in each flow, almost these features existed below 250Hz. By using auditory roughness which is one of the methods of psychoacoustic sound quality evaluation, we found specific feature on containing large amount gas flow.
