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Improvement of buoyancy and acceleration parameters for forced and mixed convective heat transfer to supercritical fluids flowing in vertical tubes
Abstract An analytical approach is applied to examine the buoyancy and acceleration effects on forced and mixed convective heat transfer at supercritical pressures. Two non-dimensional parametersExpand
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Comparison of CHF measurements in horizontal and vertical tubes cooled with R-134a
An experimental study of the critical heat flux (CHF) in horizontal and vertical tubes cooled with R-134a has been completed. The investigated ranges of flow parameters in R-134a were outletExpand
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A review on recent heat transfer studies to supercritical pressure water in channels
Abstract Recent studies on heat transfer to super-critical water (SCW) in tubes, annuli and rod bundles have been reviewed in support of the development of supercritical water-cooled reactors.Expand
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Numerical investigation of buoyancy effect on heat transfer to carbon dioxide flow in a tube at supercritical pressures
Abstract A numerical analysis of the buoyancy effect on heat transfer to carbon dioxide flow at supercritical pressures in a vertical heated tube has been carried out using the FLUENT computationalExpand
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Overview of methods to increase dryout power in CANDU fuel bundles
Abstract In CANDU reactors some degradation in the CCP (critical channel power, or power corresponding to the first occurrence of CHF in any fuel channel) will occur with time because of ageingExpand
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Thermal-hydraulics analysis of flow blockage events for fuel assembly in a sodium-cooled fast reactor
Abstract The subchannel code ATHAS-LMR has been improved for analyzing thermal-hydraulics characteristics of flow blockage events in the fuel assembly of a sodium-cooled fast reactor (SFR). Based onExpand
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Heat transfer from a 2 × 2 wire-wrapped rod bundle to supercritical pressure water
Abstract An experiment has been completed to study the heat transfer characteristics of supercritical water in a 2 × 2 wire-wrapped rod bundle. The rod-bundle simulated a fuel assembly with fourExpand
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A mechanistic bubble crowding model for predicting critical heat flux in subchannels of a bundle
Abstract A mechanistic model has been developed for predicting critical heat flux (CHF) in subchannels of a bundle. It is based on the bubble crowding phenomena and takes into the account of effectsExpand
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An experimental and analytical study of the effect of axial power profile on CHF
Abstract The effect of axial heat flux distribution (AFD) on the critical heat flux (CHF) was investigated. CHF measurements were obtained with HFC-134a cooled vertical tubes having four non-uniformExpand
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