Abstract
The oscillation of pipes containing two-phase flow is very important not only for the design of heat exchangers but also for the estimation of flow behavior by detecting the vibration or noise transferred from sounding rod pressed to the components. The skilled engineers sometimes can estimate the two-phase behavior with vibration or noise from components such as heat exchangers or steam generators. To understand the oscillation behavior and possibility to estimate the flow behavior, the air-water two-phase flow experiments were conducted with small vertical tubes of 2 and 11.5mm in inner diameter. We have been presumed the quality of two-phase flow used pressure difference fluctuation and liquid flow rate. In this study, vibration of pipe was extracted directly and presumption of quality or flow pattern of two-phase flow was tried.
