Fluid transients and fluid-structure interaction in flexible liquid-filled piping

Abstract

Fluid-structure interaction in piping systems (FSl) consists of the transfer of momentum and forces between piping and the contained liquid during unsteady flow. Excitation mechanisms may be caused by rapid changes in flow and pressure or may be initiated by mechanical action of the piping. The interaction is manifested in pipe vibration and perturbations in velocity and pressure of the liquid. The resulting loads imparted on the piping are transferred to the support mechanisms such as hangers, thrust blocks, etc. The phenomenon has recently received increased attention because of safety and reliability concerns in power generation stations, environmental issues in pipeline delivery systems, and questions related to stringent industrial piping design performance guidelines. Furthermore, numerical advances have allowed practitioners to revisit the manner in which the interaction between piping and contained liquid is modeled, resulting in improved techniques that are now readily available to predict FSI. This review attempts to succinctly summarize the essential mechanisms that cause FSI, and present relevant data that describe the phenomenon. In addition, the various numerical and analytical methods that have been developed to successfully predict FSI will be described. Several earlier reviews regarding FSI in piping have been published; this review is intended to update the reader on developments that have taken place over the last approximately ten years, and to enhance the understanding of various aspects of FSI. Tables (1-2) 79

Water hammer with fluid–structure interaction in thick-walled pipes

“…Gromeka [21], Lamb [22], Skalak [10] and Lin and Morgan [11,12] analysed this problem in the frequency domain, and Bürmann [23], Stuckenbruck et al [24] and Leslie and Tijsseling [25] in the time domain. References [26] and [27] give extensive reviews of the subject.…”

Parameters affecting water-hammer wave attenuation, shape and timing—Part 1: Mathematical tools

“…In general, pipe flexure and pipe torsion must be taken into consideration because of their coupling to axial modes. More information on the subject can be found in reviews by Wiggert (1996), Tijsseling (1996) and Wiggert and Tijsseling (2001). …”

“…For real leaks, it is unlikely that the orifice equation will perfectly describe their behaviour. Real leaks come in a variety of sizes and shapes which results in deviations from the classical orifice relationship (35). In many cases a power law can be used for modelling the discharge-head loss relationship;…”

Experimental Investigation on Rapid Filling of a Large-Scale Pipeline

“…Bergant et al 2010, Bergant et al 2011, Keramat et al 2012, Tijsseling 1996, Wiggert and Tijsseling 2001, it was attempted to structurally restrain the pipe system as much as possible. The PVC pipeline was fixed to the concrete floor by metal anchors and supported with wooden blocks to reduce sagging.…”