Published August 2005 | Version v1
Journal article Metadata-only

Experimental study of flow instability in a natural circulation system with sub-cooled boiling

Creators

  • 1. Tsinghua Univ., Beijing (China). Dept. of Thermal Engineering
  • 2. Nuclear Power Inst. of China, Chengdu (China). National Key Laboratory for Bubble Physics and Natural Circulation

Description

Experimental study has been performed to investigate the flow instability in a natural circulation system with sub-cooled boiling by using Freon-12 as the working medium. In the experiments, two kinds of flow instability, flow instability with high frequency and flow instability with low frequency, were found for most conditions. It is shown that the flow instability with high frequency belongs to acoustic oscillation and the flow instability with low frequency is density wave instability. In the experiments the effect of the parameters of the working medium on the onset of the flow instabilities in the system were investigated. The stability boundaries were determined through the experiments. By means of dimensional analysis of integral equations, the common correlations describing the threshold condition of onset of the flow instabilities were obtained. (authors)

Additional details

Publishing Information

Journal Title
Nuclear Power Engineering
Journal Volume
26
Journal Issue
4
Journal Page Range
p. 317-322
ISSN
0258-0926

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
37055213
Subject category
S42: ENGINEERING; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BENCH-SCALE EXPERIMENTS; CALCULATION METHODS; EXPERIMENTAL DATA; FLOW MODELS; FLUID FLOW; FREONS; INSTABILITY; NATURAL CONVECTION; PRIMARY COOLANT CIRCUITS; PWR TYPE REACTORS; SUBCOOLED BOILING; WORKING FLUIDS
Descriptors DEC
BOILING; CONVECTION; COOLING SYSTEMS; DATA; ENERGY SYSTEMS; ENERGY TRANSFER; ENRICHED URANIUM REACTORS; FLUIDS; HALOGENATED ALIPHATIC HYDROCARBONS; HEAT TRANSFER; INFORMATION; MASS TRANSFER; MATHEMATICAL MODELS; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; PHASE TRANSFORMATIONS; POWER REACTORS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
6 figs., 3 refs.