BURITI, C. J. O.; http://lattes.cnpq.br/4456593037483906; BURITI, Cidronia Janiclebia de Oliveira.
Résumé:
The transport of oil and its derivatives have been made in the vast majority through
networks of pipelines linking the oil fields, refineries and distribution networks to
consumption centers. And this has been the best way to transport oil, especially in
areas of difficult access, ensuring efficiency, lowest cost and safety. In the chemical
and petroleum industry, the concept of failure should be observed comprehensively
and can mean a serious event, which requires the production to a halt due to the
imminent risk of accidents with catastrophic consequences for humans and / or the
environment. What stimulates the development of reliable techniques for the rapid
and accurate detection of leaks along the pipe in order to eliminate or minimize the
loss and environmental damage. Understanding the flow behavior in the presence of
leakage enables indication of leakage detection techniques that generate false alarms.
This study evaluated the effect of the numerical presence of leakage of two-phase
flow (oil-water) pipe connections using the commercial software ANSYS CFX. With
the field profiles of volume fraction, temperature and velocity and pressure, it was
possible to evaluate the influence of the leakage flux and the evolution of pressure
and pressure drop with time. The results of the numerical simulations have
demonstrated a role in the choice of boundary conditions the pouring hole.
