Simulação numérica do escoamento de óleo em um duto submerso com orifício de vazamento.

Abstract

Leaks in pipelines, beyond financial losses can cause various environmental damage, where the knowledge of interfacial phenomena of immiscible liquids allows us to understand the advective migration process in subsea pipelines. Therefore, these informations allows to predict the behavior and geometrical form of water-oil interface and provide a good phenomenological foundation with respect to the theories of perturbation, the criteria of stability and the mathematical model as well as the flow patterns in around of the leakage starting from underwater pipelines. In view of this, this work aims to numerically study the influence of the oil leak in the sea starting from submerged pipe or the opposite about behavior of fluids. For this, it was adopted a two-dimensional model based on mass conservation and linear momentum equations and the k-ε standard turbulence model available in Ansys CFX. The dynamic behavior of oil and water is shown with the aid of pressure, superficial velocity and volumetric fraction fields of oil and water and velocity vectors. The simulation results indicate the presence of oil spills in sea water in the stream and the water for oil tube through of the orifice leakage.