Development of droplet entrainment and deposition models for horizontal flow

Models for the rate of atomization and deposition of droplets for stratified and annular flow in horizontal pipes are presented. The entrained fraction is the result of a balance between the rate of atomization of the liquid layer that is in contact with air and the rate of deposition of droplets. T...

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Published inNuclear engineering and technology Vol. 50; no. 3; pp. 379 - 388
Main Authors Schimpf, Joshua Kim, Kim, Kyung Doo, Heo, Jaeseok, Kim, Byoung Jae
Format Journal Article
LanguageKorean
Published 2018
Subjects
Horizontal Pipe
Annular Flow
Gas-Liquid Flow
Stratified Flow
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Summary:Models for the rate of atomization and deposition of droplets for stratified and annular flow in horizontal pipes are presented. The entrained fraction is the result of a balance between the rate of atomization of the liquid layer that is in contact with air and the rate of deposition of droplets. The rate of deposition is strongly affected by gravity in horizontal pipes. The gravitational settling of droplets is influenced by droplet size: heavier droplets deposit more rapidly. Model calculation and simulation results are compared with experimental data from various diameter pipes. Validation for the suggested models was performed by comparing the Safety and Performance Analysis Code for Nuclear Power Plants calculation results with the droplet experimental data obtained in various diameter horizontal pipes.
Bibliography:KISTI1.1003/JNL.JAKO201814956119852
ISSN:1738-5733
2234-358X