Simulação numérica de um escoamento livre paralelo a um plano poroso

Abstract

Fluid flow over porous surfaces is present in many engineering situations, such as surfasse runoff on slopes, drainage problems, among others. The present work presents a numerical model that describes the free flow over an inclined flat porous surface with the objective of analyzing the impact of the properties of the porous matrix on the flow. Using the Finite Volume Method, the governing equations, including conservation of mass, momentum and energy are discretized and solved to model a two-dimensional flow in the incompressible regime. The results highlight the effects of the Darcy number on flow velocity profiles. It was observed that lower permeability in the porous matrix increases the fluid’s resistance to flow, while higher permeability gradually reduces its impact on external flow. This research contributes to the understanding of flow behavior relevant to environmental applications, such as surface water systems and soil interactions. Keywords: Porous media,flow and permeability.