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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
FORECASTING THE LENGTH OF THE THERMAL DEVELOPING REGION AT THE ENTRANCE OF BIFURCATIONS
Submission Author:
Flavio Peres Amado , RJ , Brazil
Co-Authors:
Flavio Peres Amado, Mila Avelino, Jordana colman, EDIOMEDSON SALES
Presenter: Flavio Peres Amado
doi://10.26678/ABCM.ENCIT2020.CIT20-0634
Abstract
In this work the region of thermal development at the entrance of asymmetric bifurcations is approached. Measurements of the length of this stretch are performed on images generated by numerical simulation, executed with the aid of the finite difference method, as well as a commercial simulator. The objective is to draw equations that can predict the extension as a function of diameter and dimensionless quantities such as Dean and Prandtl numbers. Three equations are proposed that deal with the isolated variation of the flow rate, the angles of the bifurcation, as well as the diameter of the feeder channel. These expressions. are also tested as a wide-aspect equation, that is, a correlation that could predict the extension of the not developed thermal region with the variation of all dimensional and flow characteristics together. The study considers that the proposed equations are valid for symmetric and asymmetric bifurcations. Subsequent work is recommended where the behavior of the thermal development is verified as a function of physical properties like density and viscosity, which make up the Reynolds number
Keywords
Thermal development, Bifurcations
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