Identification of two-phase flow regimes by neutron noise analysis
The identification of two-phase flow patterns in a nuclear reactor core is important to the design and operation of a boiling water reactor (BWR). Basically, two-phase flow shows some fluctuating characteristics even at steady-state conditions. These fluctuating characteristics can be analyzed by statistical methods for obtaining flow signatures. There have been a number of experimental studies conducted that a concerned with the statistical properties of void fraction of neutron noise in experimental reactors or BWRs. In this study, the authors propose a new technique of identifying the patterns of air/water two-phase flow in the core of the zero power reactor of the Institute of Nuclear Energy Research. This technique is based on analyzing the statistical characteristics of the neutron noise signals from the in-pile test loop by time-series modeling. Although only limited two-phase flow conditions have been studied so far in this investigation. The results justify application of this technique to wider flow conditions and more complicated duct geometries.
- OSTI ID:
- 5770098
- Report Number(s):
- CONF-881011-
- Journal Information:
- Trans. Am. Nucl. Soc.; (United States), Journal Name: Trans. Am. Nucl. Soc.; (United States) Vol. 57; ISSN TANSA
- Country of Publication:
- United States
- Language:
- English
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Identification of two-phase flow regimes by neutron noise analysis
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Related Subjects
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
AIR
ALGORITHMS
BUBBLES
BWR TYPE REACTORS
DAMPING
DESIGN
ENERGY TRANSFER
EXPERIMENTAL REACTORS
FLUID FLOW
FLUID MECHANICS
FLUIDS
GASES
HEAT TRANSFER
HYDRAULICS
HYDROGEN COMPOUNDS
MATHEMATICAL LOGIC
MECHANICS
OPERATION
OPTIMIZATION
OXYGEN COMPOUNDS
REACTOR COMPONENTS
REACTOR CORES
REACTOR NOISE
REACTOR OPERATION
REACTOR STABILITY
REACTORS
RESEARCH AND TEST REACTORS
STABILITY
TIME DEPENDENCE
TWO-PHASE FLOW
VOID FRACTION
WATER
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZERO POWER REACTORS