Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
SENSIBILITY STUDY OF MOMENTUM EQUATION MODELS FOR SUBCOOLED BOILING PHENOMENA SIMULATION
Submission Author:
Brian de Lima Curtt , SP
Co-Authors:
Brian de Lima Curtt, Francisco Braz Filho
Presenter: Brian de Lima Curtt
doi://10.26678/ABCM.ENCIT2018.CIT18-0401
Abstract
The sensitivity of ANSYS FLUENT momentum models in the simulation of subcooled boiling flow is studied. Aiming for the prediction of nuclear industry related transients, this paper intends to establish the foundation of more specific applications in design and safety analysis of water-cooled nuclear power plants. For this, a heated channel is modeled and submitted to forced convection boiling. Momentum equation components like turbulence, boiling and interfacial transfer models are reviewed and systematically tested. Key parameters for estimation of simulation quality are chosen allowing comparison and selection of proper modeling options. A set of promising models for the future prediction of the critical heat flux is established, indicating the relevance of turbulent dispersion model in the void fraction calculation.
Keywords
subcooled boiling phenomena, sensibility study, momentum, CFD
