Thermal hydraulics of valves for nuclear applications

Journal Article · Thu Nov 01 04:00:00 EST 1984 · Nucl. Sci. Eng.; (United States)

OSTI ID:6029495

Sallet, D W

Thermal-hydraulic aspects of valves used in nuclear power plants are discussed. Emphasis is given to a review of recent work on safety and pressure relief valves, including the presentation of some experimental results describing one- and two-phase flow through such valves. Measurements of internal flow fields are presented. Significant flow separation occurs in both the safety and the pressure relief valves. An experimental study using high-speed photography to determine vaporization sites in safety valves when the flowing medium is initially a compressed liquid is described. A new method of estimating the observed decrease in valve coefficient when choked vapor flow changes to liquid flow is developed. This method also permits the prediction of the observed dependence of the valve coefficient on the receiver pressure in the choked and unchoked flow regimes. The fluid dynamic phenomena that lead to valve disk vibrations are discussed.

• Research Organization: Univ. of Maryland, College Park, MD
• OSTI ID: 6029495
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 88:3; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
COMPRESSIBLE FLOW
CONTROL EQUIPMENT
EQUIPMENT
EVAPORATION
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
FLUIDS
FORECASTING
GASES
HYDRAULICS
MECHANICS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
PHASE TRANSFORMATIONS
PHOTOGRAPHY
POWER PLANTS
PRESSURE DEPENDENCE
THERMAL POWER PLANTS
THERMODYNAMICS
TWO-PHASE FLOW
ULTRAHIGH-SPEED PHOTOGRAPHY
VALVES
VAPORS