Author(s)

J.F.A. Bias Delgado

Abstract

Finite volume computation of internal turbulent flows promoted by wind action and heat release employing a 3D nonorthogonal collocated grid system J.F.A. Bias Delgado Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2825 Monte de Caparica, Portugal ABSTRACT A general numerical method for the solution of the complete 3D averaged Navier-Stokes equations is presented. This method uses nonorthogonal co-ordinates, Cartesian velocity components and a pressure-velocity-coupling algorithm suitable for nonstaggered grid systems. A k-e two-equation turbu- lence model is used with this method to calculate the turbulent flow inside a heated space in communication with the outside environment through two small ventilation openings. INTRODUCTION Natural ventilation flows inside buildings are promoted by the combined action of thermal buoyancy and external wind. These natural flows present almost the cases complex geometries. For flow calculations

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