Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL ANALYSIS OF CONSTRUCTION OF EMPTY CHANNELS INSERTED IN POROUS MEDIUM PLATE COMPARING TWO DIFFERENT BOUNDARY CONDITIONS
Submission Author:
Elizaldo dos Santos , RS , Brazil
Co-Authors:
Glauciléia Maria Magalhães, Marcello Chiomento, Liércio Isoldi, jeferson Avila Souza, Elizaldo dos Santos
Presenter: Elizaldo dos Santos
doi://10.26678/ABCM.ENCIT2020.CIT20-0109
Abstract
Present numerical study investigates the construction of empty channels based on Constructal Theory in a porous plate considering two different boundary conditions: external surfaces of the plate with prescribed atmospheric pressure and lateral surfaces with no-slip and impermeability boundary condition. The main purpose is the development of a methodology where the form and structure of the channels growth from an elementary empty channel using a construction function instead of use of predefined shapes for empty channels. The other goal is to investigate the influence of boundary conditions in the channel growth and performance indicators. Conservation equations of mass, momentum and one transport equation of volume fraction of resin are solved with the Finite Volume Method (FVM). The Volume of Fluid (VOF) model is used for the treatment of multiphase flow. Results indicated that the design growth was similar for both boundary conditions. The influence of the number of Constructal elements over the resin infusion time to impregnate the porous plate was similar for both boundary conditions. However, the effect of number of elements over the amount of wasted resin is affected by the boundary condition.
Keywords
Numerical analysis, boundary conditions, Resin infusion, Empty Channels, Constructal Theory
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