THERMAL COUPLING IN PARTICLE FINITE ELEMENT METHOD - SECOND GENERATION

SKLAR, DIEGO; GIMENEZ JUAN; NIGRO NORBERTO; IDELSOHN, SERGIO

Salta

Congreso; MECOM 2012; 2012

AMCA

In previous papers the numerical method called Particle Finite Element Method - SecondGeneration (PFEM-2) was presented, for solving scalar and vectorial transport equations such as NavierStokes equations for transient, laminar and incompressible flows. This method is characterized by aLagrangian formulation that uses both particles and mesh to solve physics equations. Taking advantageof that particles can transport physics variables that any model includes, this paper presents an evolutionof the method for solving equations that govern the fluid flow coupled with passive-scalar transportequations, such as species concentrations or temperature. Also, the explicit streamline integrationstrategy used by the method allows to update each variable following its own physic law in an efficientway.This paper places particular emphasis in the thermal coupling through a buoyancy term added tofluid acceleration and transporting at each particle its temperature. Regarding the implementation, itfollows the parallel computing strategy presented above and, to test it, accuracy results obtained in typicalbenchmark cases, such as thermal square cavity and thermal cubic cavity, are presented; comparing itwith bibliographic and experimental data.