Coupling structures-confined axial flow

The problem of fluid-elastic instability in confined axial flows is indeed quite complex, and still far from being solved. It is in fact of much interest for two reasons: it can be found in quite a number of industrial cases, and moreover, it makes an excellent source of questions to be raised in the field of flow induced vibrations. It is today a very active field of research, and many of the theoretical, numerical or experimental results have been published in the past 20 years. This leads to a rather complex and somewhat inconsistent set of methodologies. In this paper, the basis of the physical mechanisms of these methods will be emphasized. Further details may be found in. (authors). 19 refs., 6 figs