Fluidelastic instability of flexible tubes subjected to two-phase internal flow

Christine Monette

doi:10.1016/j.jfluidstructs.2004.06.003

Fluidelastic instability of flexible tubes subjected to two-phase internal flow

2004-08-01

77

PRE

AI

DOI：10.1016/j.jfluidstructs.2004.06.003

Original

Original request for help

Save

Abstract

En 中文

The fluidelastic instability behaviour of flexible tubes subjected to internal single-phase (liquid or gas) flows is now reasonably well understood. Although many piping systems operate in two-phase flows, so far very little work has been done to study their dynamic behaviour under such flows. This paper presents the results of a series of experiments to study the fluidelastic instability behaviour of flexible tubes subjected to two-phase internal flow. Several flexible tubes of different diameters, lengths and flexural rigidities were tested over a broad range of flow velocities and void fractions in an air-water loop to simulate two-phase flows. Well-defined fluidelastic instabilities were observed in two-phase flows. The existing theory to formulate the fluidelastic behaviour under internal flow was developed further to take into account two-phase flow. The agreement between the experimental results and the modified theory is remarkably good. However, it depends on using an appropriate model to formulate the characteristics of the two-phase flows. (C) 2004 Elsevier Ltd. All rights reserved.

Keywords:

VIBRATION

DYNAMICS

Fluidelastic instability of flexible tubes subjected to two-phase internal flow

Abstract

AI Summary

Journal

Organization