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Experimental investigation into the effects of reduced vertical centre of gravity of an articulated concrete mattress in current flow

Citation

Neville, AT and Mclaren, RWG and Weber, JR and Chin, CKH and Binns, JR and Taylor, A, Experimental investigation into the effects of reduced vertical centre of gravity of an articulated concrete mattress in current flow, International Journal of Maritime Engineering, 159, (A3) pp. 301-310. ISSN 1479-8751 (2017) [Refereed Article]


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Copyright Statement

2017: The Royal Institution of Naval Architects

DOI: doi:10.3940/rina.ijme.2017.a3.433

Abstract

An articulated concrete mattress model has been utilised to investigate the effects of reduced vertical centre of gravity on the stability of a 400 series block. Experimental testing was conducted at the AMC CWC, Beauty Point. To determine the effects that a reduced centre of gravity has on stability, the 3 by 3 articulated concrete mattress model was subject to pure uniform current flow. The subsequent forces were analysed with a six degree of freedom underwater force sensor. In order to gain a range of real world scenarios, the experimental model was tested at six flow angles ranging from - I 5 degrees through to 60 degrees, at 15 degree increments. Additionally, five fluid velocities starting at 0.6 m/s through to 1.4 m/s, at 0.2 m/s increments were investigated. These results explain how the inversion of a 400 series block increases its hydrodynamic coefficients and subsequently decreases its stability performance in current flow. Ultimately, this study provides experimental information for the installation of 400 series articulated concrete mattresses in the inverted orientation.

Item Details

Item Type:Refereed Article
Keywords:articulated concrete mattress, hydrodynamics coefficients, stability, failure velocity
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ocean Engineering
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Neville, AT (Mr Adam Neville)
Author:Mclaren, RWG (Mr Rory Mclaren)
Author:Weber, JR (Mr Josh Weber)
Author:Chin, CKH (Dr Chris Chin)
Author:Binns, JR (Associate Professor Jonathan Binns)
ID Code:122028
Year Published:2017
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2017-10-26
Last Modified:2017-11-24
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