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Water 2015, 7(11), 6321-6350; doi:10.3390/w7116321

Mechanical Interaction in Pressurized Pipe Systems: Experiments and Numerical Models

1
Civil Engineering Research and Innovation for Sustainability (CEris) of the Department of Civil Engineering, Architecture and Georesources, Instituto Superior Técnico (IST), Universidade de Lisboa (ULisboa), Lisbon 1049-001, Portugal
2
Geomatics and Hydraulic Engineering Department, University of Guanajuato, Guanajuato 36094, Mexico
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Miklas Scholz
Received: 6 September 2015 / Revised: 29 October 2015 / Accepted: 2 November 2015 / Published: 11 November 2015

Abstract

The dynamic interaction between the unsteady flow occurrence and the resulting vibration of the pipe are analyzed based on experiments and numerical models. Waterhammer, structural dynamic and fluid–structure interaction (FSI) are the main subjects dealt with in this study. Firstly, a 1D model is developed based on the method of characteristics (MOC) using specific damping coefficients for initial components associated with rheological pipe material behavior, structural and fluid deformation, and type of anchored structural supports. Secondly a 3D coupled complex model based on Computational Fluid Dynamics (CFD), using a Finite Element Method (FEM), is also applied to predict and distinguish the FSI events. Herein, a specific hydrodynamic model of viscosity to replicate the operation of a valve was also developed to minimize the number of mesh elements and the complexity of the system. The importance of integrated analysis of fluid–structure interaction, especially in non-rigidity anchored pipe systems, is equally emphasized. The developed models are validated through experimental tests. View Full-Text
Keywords: fluid structure interaction (FSI); method of characteristics (MOC); computational fluid dynamic (CFD); waterhammer; finite element method (FEM) fluid structure interaction (FSI); method of characteristics (MOC); computational fluid dynamic (CFD); waterhammer; finite element method (FEM)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Simão, M.; Mora-Rodriguez, J.; Ramos, H.M. Mechanical Interaction in Pressurized Pipe Systems: Experiments and Numerical Models. Water 2015, 7, 6321-6350.

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