Passive water hammer in pipes due to flashing

Conference · Thu Aug 01 00:00:00 EDT 1991

OSTI ID:10105664

Wolf, A R; Sweeney, E; Griffith, P

Peak water hammer pressures arising from flashing flows passing through flow restrictions have been measured in a variety of experiments. Water hammer pressures up to 60 psig have been measured. A homogeneous, equilibrium theory has been developed and shown to be conservative by a factor three or more in predicting the peak pressures. The most likely reasons for the poor prediction of the peak pressure are two. (1) The pressure wave velocity (velocity of sound) is reduced due to small amounts of steam in the pipe probably due to flashing during the starting transient. (2) Thermal non-equilibrium in the flow restriction during flashing.

• Research Organization: Massachusetts Inst. of Tech., Cambridge, MA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG07-88ER12822
• OSTI ID: 10105664
• Report Number(s): CONF-920631-2; ON: DE92004180
• Resource Relation: Conference: American Society of Mechanical Engineers (ASME) pressure vessels and piping conference,New Orleans, LA (United States),21-25 Jun 1992; Other Information: PBD: Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
REACTOR COOLING SYSTEMS
WATER HAMMER
POWER PLANTS
STEAM SYSTEMS
TEMPERATURE RANGE 0273-0400 K
PIPES
HYDRAULICS
TWO-PHASE FLOW
210100
210200
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
BOILING WATER COOLED
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
NONBOILING WATER COOLED