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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
OPTIMIZATION OF COOLING CAVITY WHIT THE APPLICATION OF CONSTRUCTAL THEORY
Submission Author:
Rudi Moreira , RS
Co-Authors:
Rudi Moreira, Emanuel da Silva Diaz Estrada, jeferson Avila Souza
Presenter: jeferson Avila Souza
doi://10.26678/ABCM.ENCIT2020.CIT20-0638
Abstract
Based on the constructal principle, the present research focuses on the problem of minimizing the maximum temperature of solid bodies with a rectangular shape and internal heat generation, i. e, maximizing the heat flow that leaves the body. The cavity has a rectangular shape (I), whose area (two-dimensional) is kept fixed while its dimensions, width (L0) and height (H0) vary. The cavity optimization occurs through the application of the Constructal Theory associated with the exhaustive search method. This process consists of determining the best relation between the dimensions of the width and height of the cavity for a given fraction of the occupied area so that the heat exchange through the isothermal walls is maximized. The GMSH software was used to generate the geometry and discretization of the computational domain. For the processing step, the laplacianFoam solver was used, which is an integral part of the OpenFOAM software. The transport equations are discretized using the Finite Volume Method (FVM). The studies performed show that for the case of the isothermal cavity, the best geometric shape of the cavity, that minimizes the maximum temperature, occurs in the almost total intrusion of the cavity into the solid.
Keywords
Cooling of cavities, Transient regime, Geometry optimization, Heat transfer, Constructal Theory
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