Abstract
Pool boiling is one of the most efficient modes of heat transfer. A passive cooling system needs to be able to remove sufficient energy following a design basis accident via steam condensation and pool boiling. This study employed a system of transient single- and twophase flow and heat transfer models to simulate the heatup process of tube bundle pool boiling in a passive cooling system. Three-dimensional simulation was performed to show the effects on temperature distribution from geometry symmetry and asymmetry in the threetube bundle system. To simulate boiling in a tube bundle water pool, the phenomena on the micro-scale have been modelled by appropriate closure relations. In this simulation, a constant heat flux is used to represent the heat release from the steam condensation inside the tubes at this stage, and an in-tube condensation model to couple with the out-tube bundle pool boiling is under development. The heat-up transient was successfully simulated with the temperature profiles of different monitor points vs. time and temperature contours of different cross sections at different time. The experimental work is undergoing, and a validation and verification of this numerical investigation will be conducted once the experimental work is completed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Proceedings of the International Conference on Nuclear Engineering (ICONE)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
