Mechanics of Pipes Conveying Fluids—Part II: Applications and Fluidelastic Problems

Abstract

This paper is the second part of the two-part review article presenting an overview of mechanics of pipes conveying fluid and related problems such as the fluid-elastic instability under conditions of turbulence in nuclear power plants. In the first part, different types of modeling, dynamic analysis and stability regimes of pipes conveying fluid restrained by elastic or inelastic barriers were described. The dynamic and stability behaviors of pinned-pinned, clamped-clamped, and cantilevered pipes conveying fluid together with curved and articulated pipes were discussed. Other problems such as pipes made of viscoelastic materials and active control of severe pipe vibrations were considered. The first part was closed by conclusions highlighting resolved and nonresolved controversies reported in the literature. The second part will address the problem of fluidelastic instability in single- and two-phase flows and fretting wear in process equipment, such as heat exchangers and steam generators. Connors critical velocity will be discussed as a measure of initiating fluidelastic instability. Vibro-impact of heat exchanger tubes and the random excitation by the cross-flow can produce a progressive damage at the supports through fretting wear or fatigue. Antivibration bar supports used to limit pipe vibrations are described. An assessment of analytical, numerical, and experimental techniques of fretting-wear problem of pipes in heat exchangers will be given. Other topics related to this part include remote impact analysis and parameter identification, pipe damage-induced by pressure elastic waves, the dynamic response and stability of long pipes, marine risers together with pipes aspirating fluid, and carbon nanotubes conveying fluid.

Numerical Study of Flow-Induced Vibrations of Multiple Flexibly-Mounted Cylinders in Triangular Array

“…The instability phenomenon in a tube bundle where the tube flexibility direction is different from the flow direction is investigated in [9]. The authors found that increasing the flexibility angle results in a decrease in the critical velocity of fluidelastic instability (FEI) (description of FEI see in [11]).…”

Steady-state response of a fluid-conveying pipe with 3:1 internal resonance in supercritical regime

“…Paï-doussis [2] summarized the fruits before 1987. In 2010, the achievements during the past 60 years, especially the progresses of nonlinear vibrations and bifurcations, were overviewed by Ibrahim [3,4].…”

Dynamic behaviors of multi-span viscoelastic functionally graded material pipe conveying fluid

“…And several excellent overviews also provide a perspective review on this issue. [19][20][21] Although many aspects of this problem have been studied over the past half-century, most of those achievements were limited within the model of single-span pipe conveying fluid. There are also some literatures about the periodical multi-span pipe conveying fluid, [22][23][24] but in the real working environment, the piping systems are always arbitrary multi-span, and the works concerning the random multi-span pipe conveying fluid are quite limited.…”