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URANS prediction of the slamming coefficients for perforated plates during water entry

Citation

Zhang, W and Chai, S and Nguyen, H and Jin, Y, URANS prediction of the slamming coefficients for perforated plates during water entry, Royal Institution of Naval Architects. Transactions. Part A. International Journal of Maritime Engineering, 160, (Part A1) pp. 41-55. ISSN 1479-8751 (2018) [Refereed Article]


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Copyright 2018 the Institution

DOI: doi:10.3940/rina.ijme.2018.a1.447

Abstract

The slamming coefficients for perforated plates of various perforation ratios and layout configurations were predicted using Unsteady Reynolds-Averaged Navier-Stokes (URANS) solver STAR-CCM+. The numerical model was validated by comparing with experimental measurements of slamming coefficient for a circular cylinder. The slamming coefficients and free surface profiles of perforated plates were then predicted at full-scale. It was found the air compressibility plays an important role by studying flat plate water entry phenomena. For perforated plates with small gap length/width ratios, the ability of the trapped air to evacuate through the space between the bottom of the plate and free surface is similar. For perforated plates with different gap number at a fixed perforation ratio, the slamming coefficient is increased with the increase in gap length/width ratio. However, a further increase in length/width ratio may impose a negative impact on the escape of trapped air due to the increase of gap number.

Item Details

Item Type:Refereed Article
Keywords:slamming coefficient, URANS, perforated plates
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ocean Engineering
Objective Division:Energy
Objective Group:Preparation and Production of Energy Sources
Objective Field:Preparation and Production of Energy Sources not elsewhere classified
UTAS Author:Zhang, W (Mr Wei Zhang)
UTAS Author:Chai, S (Professor Shuhong Chai)
UTAS Author:Nguyen, H (Dr Hung Nguyen)
UTAS Author:Jin, Y (Mr Yuting Jin)
ID Code:123170
Year Published:2018
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2017-12-19
Last Modified:2019-03-12
Downloads:0

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