Modelling of pipeline integrity taking into account the fluid-structure interaction

Abstract

Two mechanical models have been presented in this paper for structural failure prediction of piping systems conveying liquids subjected to pressure transients. One model takes into account the axial fluid–structure interaction (FSI) phenomenon between fluid and pipe motion, whereas the other refers to an extension of the well‐known waterhammer formulation. Both models are described by a system of non‐linear hyperbolic equations which are solved by using a numerical procedure based upon the operator splitting technique and Glimm's scheme. To implement Glimm's method, it is presented the solution of a 4×4 Riemann problem with discontinuous coefficients. Numerical predictions of both models are presented and compared, so that the influence of the FSI term on the failure analysis is focused on. © 1998 John Wiley & Sons, Ltd.

Fluid–structure interaction with pipe-wall viscoelasticity during water hammer

“…These models were developed with the aim of estimating the damage accumulation and lifetime prediction of industrial pipe systems. In addition, the FSI research by Rachid and Costa Mattos (1998a) provided a formulation and corresponding numerical solution for assessing structural failure due to fluid transients. studied the effects of suppression devices on water hammer and pipe vibration.…”

Constrained exact boundary controllability of a semilinear model for pipeline gas flow

“…Since the semilinear model is only valid for sufficiently small Mach numbers, we also include constraints for the Mach number directly in the analysis. We point out that such a constraint for the velocity of the gas is also used in practice to avoid vibrations of the pipelines; see [4] and [23] for studies of fluid-induced vibrations of natural gas pipelines. Note that in our result, all the constants in the assumptions are given explicitly, so they can be verified rather easily.…”

Reinforcement of GFRP Tensile Specimens with Central Holes Using Bonded Composite Patches

“…The most common application nowadays, particularly in the oil and gas industries, is the repair of metal pipelines transporting liquids with localized corrosion damage that impairs its operation [1][2][3][4]. These systems can be subjected to pressure transients [5] Such systems can be used for part-wall defects [6][7][8][9] but are also being used to repair through-wall defects, were, in addition to structural repair, leak prevention is very important [10][11][12][13]. Information on requirements and recommendations for qualification, design, installation, testing and inspection for the external application of composite repairs to corroded or damaged piping in the petroleum, petrochemical and natural gas industries can be found in standards, for example, the ISO 24817 [14] and ASME PCC-2 [15] standards.…”