Steam Bubble Collapse, Water Hammer and Piping Network Response. Volume II. Piping Network Response to Steam Generated Water Hammer

摘要

Conventional and nuclear power steam systems require the transport of high pressure, high temperature steam and water through complex piping networks. During transient phases of operation, steam and subcooled water can be present simultaneously in a variety of piping and reservoir configurations. Under certain conditions, instabilities in the two phase flows can give rise to water hammer events. Most notable are the water hammers experienced in the feed pipes to steam generator spargers in pressurized water nuclear reactors. This study combined with the work done by Gruel (1980) attempts to analyze the events which occur after the formation of an isolated steam vapor bubble. Experimental and theoretical models are developed to investigate the condensation process leading to steam bubble collapse, the mechanisms involved in the propagation of pressure waves through the pipes, and the resultant fluid-structure interactions.