Measurement of phase separation in wyes and tees. [BWR; PWR]
An important consideration in the analysis of light water nuclear reactor loss-of-coolant-accidents is the phase separation that occurs in the piping networks. To study this phenomena, the degree of phase separation of an air/water mixture flowing through specially designed wye and tee test sections was measured. The dependence of phase separation on different parameters, such as inlet quality, mass flux and separation angle, is discussed. A gamma densitometer was designed and constructed for the purpose of measuring the chordal averaged void fraction. These measurements were made at various locations within the test section in order to better understand the phase separation phenomenon. The static and dynamic errors associated with this type of measurement were analyzed and the design considerations summarized.
- Research Organization:
- Rensselaer Polytechnic Inst., Troy, NY (USA). Dept. of Nuclear Engineering
- OSTI ID:
- 6412468
- Report Number(s):
- NUREG/CR-0557
- Country of Publication:
- United States
- Language:
- English
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22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
ACCIDENTS
BWR TYPE REACTORS
FLOW RATE
FLUID FLOW
FLUID MECHANICS
HYDRODYNAMICS
LOSS OF COOLANT
MEASURING METHODS
MECHANICS
PIPE FITTINGS
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTORS
SIMULATION
TWO-PHASE FLOW
WATER COOLED REACTORS
WATER MODERATED REACTORS