Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL SIMULATION OF NATURAL CONVECTION INSIDE A SQUARE ENCLOSURE WITH DIFFERENTIALLY HEATED SIDE WALLS USING THE SOFTWARE OPENFOAM
Submission Author:
Luiz Paulo Borges Miranda , MG , Brazil
Co-Authors:
Luiz Paulo Borges Miranda, Daniel Dall Onder dos Santos
Presenter: Luiz Paulo Borges Miranda
doi://10.26678/ABCM.COBEM2019.COB2019-0850
Abstract
Non-Newtonian are present at several industrial process, thus it is important to develop tools that consider this behavior when solving the balance equations. This paper seeks to validate an OpenFOAM routine for permanent incompressible flows, that adopt the generalized Newtonian fluid hypothesis to model the viscosity variation, and the Boussinesq’s approximation to model the buoyancy effects. The results obtained with the proposed routine were compared with the results found on the literature, with a good agreement. Local parameters, as the vertical velocity and temperature profiles, and global parameters, as the mean Nusselt number, were analyzed. Bingham and power-law fluids were simulated. For some cases, an image analysis software was used to permit the numerical comparison of the analyzed parameters. The sum of squared errors, the coefficient of determination and the root mean square error were used to evaluate the difference between the profiles shown at the literature and the profiles obtained with the proposed routine.
Keywords
OpenFOAM, Natural Convection, Generalized Newtonian fluid, Boussinesq’s Approximation
