Title: Modelling of aero-acoustic wave propagation in low Mach number corrugated pipe flow

Authors: Mihaela Popescu, Stein Tore Johansen

Addresses: SINTEF Materials and Chemistry, 7465 Trondheim, Norway. ' SINTEF Materials and Chemistry, 7465 Trondheim, Norway

Abstract: This paper sets out to investigate parameters that determine flow-induced vibrations in flexible, corrugated pipes. A central element in this paper is a mathematical model that describes the phenomenon. The presented model is designed to capture the aero-acoustic wave behaviour of gas that flows in a corrugated pipe, exploring the feedback analysis. This model involves the coupling between the large-scale acoustic behaviour in a pipe and a line of self-excited oscillators representing vortex excitation caused by flow over corrugations.

Keywords: CFD; computational fluid dynamics; acoustics; sound generation; riser; corrugated pipes; pipe flow; modelling; aeroacoustics; wave propagation; low Mach number; gas flow; flow-induced vibrations; vortex excitation; mathematical modelling.

DOI: 10.1504/PCFD.2009.027373

Progress in Computational Fluid Dynamics, An International Journal, 2009 Vol.9 No.6/7, pp.417 - 425

Published online: 21 Jul 2009 *

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