Unsteady surge characteristics in semi-circular channels

Abstract

Partially-filled pipe flows are commonly observed in civil, environmental and sanitary engineering. The propagation of a positive surge in a confined space might create explosive conditions. Herein the propagation of a compression wave was investigated physically in a relatively large-size semi-circular channel. The unsteady turbulent characteristics were recorded to understand how the sudden cross sectional shape change impacted onto the transient surge propagation and unsteady flow characteristics.