Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Numerical investigation of the heat transfer of a viscoplastic flow inside a cavity with embedded cylinders
Submission Author:
Daniel Dall Onder dos Santos , MG , Brazil
Co-Authors:
Luiz Paulo Borges Miranda, Daniel Dall Onder dos Santos, Amir Roberto De Toni Junior
Presenter: Daniel Dall Onder dos Santos
doi://10.26678/ABCM.ENCIT2022.CIT22-0427
Abstract
A numerical study is performed to analyze the effects of Reynolds, plastic, and Richardson numbers on the non-isothermal, viscoplastic flow around two aligned cylinders embedded in a square enclosure under mixed convection conditions. The mechanical model is obtained by coupling the mass, momentum, and energy equations with the SMD viscoplastic model. The system of equations is solved using a Galerkin least-squares (GLS) type finite element method, and the average Nusselt number and displacement efficiency will be presented for each simulated case. The results point out that the heat transfer is generally enhanced by increasing the Richardson and Reynolds numbers; on the other hand, increasing the plastic number leads to an overall reduction in the average Nusselt number and a sudden drop in the displacement efficiency.
Keywords
Viscoplastic flow, plastic number, Mixed Convection, SMD viscoplastic model, Galerkin least-squares method
