Initiation of Water Hammer in Horizontal or Nearly-Horizontal Pipes Containing Steam and Subcooled Water

摘要

Water slug formation in a stratified countercurrent flow of steam and subcooled water in a horizontal or nearly horizontal pipe traps a large steam bubble, which then collapses rapidly and causes a water hammer. This water hammer initiating mechanism has been studied experimentally and analytically. Water slug formation in a stratified countercurrent flow of steam and subcooled water in a horizontal or nearly horizontal pipe traps a large steam bubble, which then collapses rapidly and causes a water hammer. This water hammer initiating mechanism has been studied experimentally and analytically.