Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
CFD SIMULATION OF SUBCOOLED FLOW BOILING IN A COOLANT SUBCHANNEL OF A PWR
Submission Author:
Felipe Porto Ribeiro , RJ , Brazil
Co-Authors:
Felipe Porto Ribeiro, Su Jian
Presenter: Felipe Porto Ribeiro
doi://10.26678/ABCM.ENCIT2018.CIT18-0165
Abstract
Two-phase flows can be found in a wide variety of industrial applications, so understanding the process of phase change is of crucial importance for the operation and safety of many industrial equipment, including nuclear reactor. The high capacity of Computational Fluid Dynamics (CFD) code to predict multi-dimensional thermal-hydraulics behavior and multiphase flows, allied to the increased availability of capable computer systems, are making CFD a good tool to simulate single and two-phase phenomena of thermal-hydraulics nature in nuclear reactors. The present work proposes a study of subcooled flows to better understand the Eulerian RPI (Rensselaer Polytechnic Institute) wall boiling model and its closure models, existing in the commercial code ANSYS - Fluent, through analyses of mesh refinement and turbulence model impact on this model. Numerical results of CFD simulation compare favorably with available numerical and experimental data.
Keywords
CFD, Subcooled, Boiling
