Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
On the wave propagation in ducts with two-phase flows
Submission Author:
Pedro Henrique de Melo Casado Matos , DF , Brazil
Co-Authors:
Pedro Henrique de Melo Casado Matos, Adriano Todorovic Fabro, Charlie van der Geest, Marcelo Souza de Castro
Presenter: Pedro Henrique de Melo Casado Matos
doi://10.26678/ABCM.COBEM2019.COB2019-1190
Abstract
There are few studies about elastic wave propagation in ducts with two-phase flows, which are extremely relevant in applications such as oil and gas and nuclear engineering. Typically, two-phase flows and structure interaction have been described under a modal based approach, i.e. taking into account natural frequencies and mode shapes. This approach requires previous information about boundary conditions and pipe length span, for instance, which makes it harder to generalize to a broader set o operational conditions. In this work, a simple fluid-structure coupling approach is described and this is used to find the wave velocity of propagating waves along the duct due to the fluid influence. The wave dispersion relation is calculated for some typical cases considering both empty pipe and pipe transporting twophase flows. A dispersed bubbles flow pattern is considered and the homogeneous model is used to describe the two-phase flow properties. It is shown that this approach can be potentially used to describe the fluid-structure interaction under a broader set of operational conditions.
Keywords
Two-phase Flow, wave propagation, fluid-structure interaction, dispersion curve
