ASSESSMENT OF MIXED CONVECTION HEAT TRANSFER CORRELATIONS AT SUPERCRITICAL PRESSURES
The 5th International Symposium on SuperCritical Water-cooled Reactors - 2011 March 13-16


Presented at:
The 5th International Symposium on SuperCritical Water-cooled Reactors
2011 March 13-16
Location:
Vancouver,Canada
Session Title:
Thermalhydraulics Assessment

Authors:
Yoon Yeong Bae (Korea Atomic Energy Research Institutes)
Sung Deok Hong (Korea Atomic Energy Research Institutes)
Yong Wan Kim (Korea Atomic Energy Research Institutes)
  

Abstract

Despite the numerous supercritical heat transfer correlations have been proposed in the past several decades, the predictions by using those correlations showed wide discrepancies each other and were not satisfactory. Especially, in a mixed convection heat transfer regime, no correlation was successful in producing accurate predictions. Under a strong buoyancy influence, boundary layer structure is known to deform significantly at a wall temperature close to the pseudocritical temperature. Recently, several correlations have been proposed for the prediction of heat transfer coefficient in both a mixed convection and a forced convection. In this paper, the applicability of those correlations was assessed against the data for CO2 and water.

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