Flow-Induced Vibrations in Power and Process Plant Components—Progress and Prospects

Abstract

This paper provides a brief overview of progress in our understanding of flow-induced vibration in power and process plant components. The flow excitation mechanisms considered are turbulence, vorticity shedding, fluidelastic instability, axial flows, and two-phase flows. Numerous references are provided along with suggestions for future research on unresolved issues. [S0094-9930(00)01203-8]

Development of Design Criteria for Fluid Induced Structural Vibrations in Steam Generators and Heat Exchangers

“…In particular, it was possible to construct an instability map where the onset of fluid elastic instability, regarded as the flow critical reduced velocity, is plotted against the mass damping parameter as defined previously. Figure 3.19 reports data from other authors (Weaver et al, 2000 ) for experiment in single phase flow. The graph also illustrates the suggested guidelines for tube bundle design and operation recommended by the ASME Boiler Code (Section III, Appendix N) and the median curve that best interpolates the experimental data.…”

“…The authors indicate the need for further understanding of the phenomenon of fluidelastic instability in two-phase flows, especially the effect of the flow regime on instability. A recent article by Weaver, Ziada et al (2000) regarding the state-of-art of fluid-elastic instability studies in two-phase flow indicates the need for studying the effect of void fraction and flow regime on the instability. Since the publication of the above mentioned review papers, some work has been carried out to study the effect of void fraction and flow regime on instability.…”

Experimental study of the propagation of a far-field disturbance in the turbulent flow through square array tube banks

“…The results show that, due to the complexity of the flow, there are small differences between the vibration frequencies of the tubes in different rows, which are very close to the natural frequency of the tubes. Weaver et al (2000) present an overview on flow-induced vibration problems, considering the several excitation mechanisms and presenting a list of the most important references at that time and suggested areas for future research. Careful experimentation is required to improve the understanding of excitation mechanisms, establish more precise guidelines, and providing benchmark for evaluating codes that were not still developed, due to the complexity of the problems and the limitation of the current computer technology.…”

Experimental investigations on nuclear aerosols in a severe accident

“…A flow of fluid over an array of tubes results in hydrodynamic effects or fluid oscillation and fluid-structure coupling (Pettigrew, 1981;Wambsganss, 1987;Weaver et al, 2000). These effects generate hydrodynamic forces and fluid structure coupling forces.…”

“…It is recorded each 700 ms and the error associated can be assumed also as double the standard This study is not intended to be a comprehensive review of earlier work regarding the flowinduced vibration which can be found in several review documents such as Pettigrew et al, 1995;Price, 1995;Weaver et al, 2000, but it is focused on the effect of the aerosol retention on the tube bundle. Nevertheless, aimed to understand the effect of the vibration on the aerosol retention, the dynamic behavior of the anticipated tube bundle has been investigated within the SET campaign too.…”