Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
Computational Study of Turbulence Models on Natural Circulation Circuits with Heat Generation
Submission Author:
Ian Steve Boshoff , RJ
Co-Authors:
Ian Steve Boshoff , Su Jian
Presenter: Ian Steve Boshoff
doi://10.26678/ABCM.ENCIT2018.CIT18-0305
Abstract
This paper aims to study and model the natural circulation on an asymmetrical circuit with heat generation in only one side. The effects of different turbulence models and mesh refinements were analyzed in order to determine the optimal RANS simulation parameters. Since the circuits had important regions of free flow and near the walls, the SST turbulence model showed better performance. Several conditions of heat generation were studied to determinate an equation relating the Nusselt number and the Rayleigh number. The results obtained proved to be very close to natural circulation circuits with more rectangular geometries and different heat sources.
Keywords
turbulence modeling, natural circulation
