Marsh, Adam, Prakash, Mahesh, Semercigil, Eren and Turan, Ozden (2011) A study of sloshing absorber geometry for structural control with SPH. Journal of Fluids and Structures, 27 (8). pp. 1165-1181. ISSN 0889-9746

Abstract

The primary objective of this work is to investigate the effects that an absorber's shape has on its control performance, particularly during circumstances of large structural displacements. In such conditions, violent fluid behaviour is observed at the free-surface. Such behaviour is known to be responsible for dissipating large amounts of structural energy (Marsh et al., 2009), and is therefore a desirable phenomenon. Potential enhancements are explored, with shapes different than a rectangle, through numerical investigation. The relationship between container shape and fluid behaviour is assessed. Due to complex free-surface behaviour, Smoothed Particle Hydrodynamics (SPH) is used as a numerical modelling tool in this study. SPH is a Lagrangian method for solving the equations of fluid flow. It is suitable for modelling liquid sloshing due to its grid free nature, and inherent ability to capture free-surface behaviour accurately (Monaghan, 1992). SPH has been successfully applied to a wide range of industrial fluid flow applications involving complex geometries in many instances (Cleary et al., 2007a, Cleary et al., 2007b, Cleary et al., 2002, Cleary et al., 2006 and Marsh et al., 2009). In order to validate the predictions of fluid–structure interaction with the SPH model, simple experimental observations (Marsh, 2009) are also presented here. SPH is found to provide an accurate prediction of structure's oscillations, employing a wide range of liquid depths.

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