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Thermal stratification in a horizontal pipe of pressurizer surge line
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 Title & Authors
Thermal stratification in a horizontal pipe of pressurizer surge line
Jeong, Il-Seok; Kim, Yu; Park, Man-Heung; Yeom, Hak-Gi;
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 Abstract
In this paper, the unsteady two dimensional model for the thermal stratification in the pressurizer surge line of PWR plant has been proposed to numerically investigate the heat transfer and flow characteristics. The dimensionless governing equations are solved by using the Control Volume Formulation and SIMPLE (Semi-Implicit Method for Pressure Linked Equations) algorithm. The temperature profile of fluids and pipe wall with time are shown when the thermal stratification occurs in the horizontal pipe. The numerical result shows that the maximum dimensionless temperature difference is about O.514 between hot and cold section of pipe wall at dimensionless time 1,632.
 Keywords
Thermal Stratification;Surge Line;Control Volume Formulation;Unsteady State;
 Language
Korean
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