Modeling of flashing-induced flow instabilities for a natural circulation driven novel modular reactor
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DOI: 10.1016/j.anucene.2016.11.005
Abstract: Abstract An analytical study based on frequency domain analysis is presented on the flashing-induced flow instability in a natural circulation test facility, which was designed to investigate the flow instability for a BWR-type novel modular… read more here.
Keywords: novel modular; natural circulation; flashing induced; stability ... See more keywords
A methodology to investigate the effect of vertical seismic acceleration on the qualitative dynamic behaviors of a natural circulation loop with parallel nuclear-coupled boiling channels
Sign Up to like & getrecommendations! Published in 2018 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2017.10.009
Abstract: Abstract By adopting the external force method to consider the impact of seismic vibration on the two-phase flow system, this study integrates the nonlinear dynamic model of a nuclear-coupled boiling parallel-channel natural circulation loop (NCL)… read more here.
Keywords: seismic induced; methodology; natural circulation; vertical seismic ... See more keywords
Fourier analysis of the RELAP5/3D adaptive time-stepping scheme on a natural circulation loop
Sign Up to like & getrecommendations! Published in 2018 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2017.11.018
Abstract: Abstract The use of natural convection as a passive heat removal mechanism has been widely explored as a safety system of nuclear power plants. Characteristics like low complexity and economy makes Natural Circulation Loop (NCL)… read more here.
Keywords: natural circulation; stepping scheme; time; adaptive time ... See more keywords
Numerical study on flow inversion in UTSG under natural circulation
Sign Up to like & getrecommendations! Published in 2018 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2018.01.005
Abstract: Abstract For natural circulation, it is shown that reverse flows may occur in some U-tubes of UTSG, which is harmful. In this study, the effects on reverse flow phenomenon of approaching natural circulation by changing… read more here.
Keywords: natural circulation; mass; inlet mass; mass flow ... See more keywords
DSS application on single-phase natural circulation in a simple rectangular loop
Sign Up to like & getrecommendations! Published in 2018 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2018.05.004
Abstract: Abstract Scaling analysis is widely used in the design of nuclear reactor passive safety systems to ensure those scaled-down test facilities can accurately capture important phenomena in a full-scale prototype. In this study, the transient… read more here.
Keywords: single phase; natural circulation; dss; phase natural ... See more keywords
Experimental research on subcooled boiling heat transfer for natural circulation flow in a vertical 3 × 3 rod bundle
Sign Up to like & getrecommendations! Published in 2020 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2019.106989
Abstract: Abstract To meet the requirement of passive safety, natural circulation has been applied in cooling the nuclear reactor core. In comparison with the great successes in predicting subcooled boiling in simple geometries such as pipes,… read more here.
Keywords: heat; rod bundle; subcooled boiling; natural circulation ... See more keywords
Modeling and validation of RELAP5 for natural circulation flow in a single PWR fuel assembly
Sign Up to like & getrecommendations! Published in 2021 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2020.107940
Abstract: Abstract The natural circulation loops have been widely used in the design of next generation nuclear reactors and spent fuel storage facilities. However, the friction correlations for fuel bundle and grid spacers in RELAP5 code… read more here.
Keywords: fuel assembly; fuel; circulation flow; natural circulation ... See more keywords
Experimental investigation on instability characteristics of loss of heat sink accident in a natural circulation system
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DOI: 10.1016/j.anucene.2021.108143
Abstract: Abstract Loss of heat sink (LOHS) accident in a natural circulation system has a complex event sequence scenario. Flow instability phenomena in LOHS accident involves multiple flow patterns and variety instability mechanisms. Through experimental investigation,… read more here.
Keywords: instability; circulation system; heat; natural circulation ... See more keywords
Experimental studies on an air cooled, supercritical CO2 based natural circulation loop under transient conditions
Sign Up to like & getrecommendations! Published in 2017 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2017.10.016
Abstract: Abstract Experimental studies are carried out on a supercritical carbon dioxide based natural circulation loop (NCL) to investigate the loop behaviour under transient conditions. An electrical heater with controlled heat flux is used as the… read more here.
Keywords: temperature; natural circulation; air; experimental studies ... See more keywords
Scaling and distortion analysis using a simple natural circulation loop for FHR development
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DOI: 10.1016/j.applthermaleng.2019.114849
Abstract: Abstract Integral effects tests (IETs) using simulant fluids are expected to play an important role in code validation for Fluoride-salt-cooled High-temperature Reactors (FHRs). In this work, a scaling analysis is conducted for a natural circulation… read more here.
Keywords: scaling distortion; analysis; natural circulation; circulation loop ... See more keywords
Thermal-hydraulic design of natural circulation integrated steam generator using design map
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DOI: 10.1016/j.applthermaleng.2021.117389
Abstract: Abstract A natural circulation integrated steam generator (NCISG) is a new steam generator concept that prevents the sodium-water reaction, which is a major safety issue in sodium heat transfer systems using the water Rankine cycle.… read more here.
Keywords: natural circulation; design; design map; heat transfer ... See more keywords