抄録
The flow characteristics in counter-current flow in inclined pipe were examined experimentally. The classification of flow characteristics was done by visual observation, pressure gradient and liquid hold-up to characterize the flow regime. As a result, it was found that (1) the pressure gradient fluctuation was the biggest in churn flow, while it was almost constant in stratified flow, (2) the liquid hold-up at the onset of flooding agrees with the Lockhart and Martinelli correlation for the inner diameter 16mm. Furthermore, an experimental correlation to predict the frictional factor multiplier at the onset of flooding was proposed.
