Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
A LAGRANGIAN PARTICLE METHOD FOR THE HEAT TRANSFER PROBLEM WITH BUOYANCY FORCE
Submission Author:
Marcos Roselli , MG
Co-Authors:
Luiz Antonio Alcântara Pereira, Alex Bimbato
Presenter: Marcos Roselli
doi://10.26678/ABCM.ENCIT2016.CIT2016-0286
Abstract
A Lagrangian vortex method is extended to take into account mixed heat transfer. The energy equation is linked to the Navier-Stokes equations by using Boussinesq approximation; therefore, the buoyancy force is computed. Nascent vortex elements and nascent temperature particles are introduced into the flow field close to a bluff body surface. The model simulates the interaction between vorticity and temperature. The main contribution of paper is the creation of vorticity from heat. The two-dimensional strategy simulates the creation of vorticity from heat by changing the strength of cluster of vortex elements at each time step of the simulation. The numerical results show the capacity of the present method to simulate the mechanism of unsteady mixed heat transfer in the separated flow region behind the circular cylinder.
Keywords
vortex and temperature elements, panels method, aerodynamics of bluff body, buoyancy force
