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Investigation into the effects of petalling on coefficient of discharge during compartment flooding

Investigation into the effects of petalling on coefficient of discharge during compartment flooding
Investigation into the effects of petalling on coefficient of discharge during compartment flooding
Ships or risers, among many other marine structures, incur damage even with the best precautions. Whilst these damages can be catastrophic they often lead to scenarios whereby the damaged structure is ailing but not failed. In these scenarios the structure will flood and it is vital that the rate of flooding can be estimated, from a limited knowledge of the damage, so that safety and the environment can be best considered and an economical and effective recovery or repair of the vessel occurs. In an effort to improve the modelling and hence improve the advice available, research has been performed into how petalling, folding of the structure at the edge of the damage, effects the flooding of the structure. Experiments have been conducted on petalled structures and the results are compared to the coefficient of discharge for flat edged damages. The results show that petalling makes a substantial difference to the coefficient of discharge of the orifice flow which is largely dependent on the petalling angle which can both reduce or increase the flow rate dependent on the orientation. However, this difference can be predicted if the type of petalling is known.
compartment flooding, coefficient of discharge, damaged structures
0889-9746
66-78
Li, Y.
4bcf8aa8-5763-4e62-ad14-16da86b82da8
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28
Tan, M.
4d02e6ad-7915-491c-99cc-a1c85348267c
Li, Y.
4bcf8aa8-5763-4e62-ad14-16da86b82da8
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28
Tan, M.
4d02e6ad-7915-491c-99cc-a1c85348267c

Li, Y., Sobey, A.J. and Tan, M. (2014) Investigation into the effects of petalling on coefficient of discharge during compartment flooding. Journal of Fluids and Structures, 45, 66-78. (doi:10.1016/j.jfluidstructs.2013.11.016).

Record type: Article

Abstract

Ships or risers, among many other marine structures, incur damage even with the best precautions. Whilst these damages can be catastrophic they often lead to scenarios whereby the damaged structure is ailing but not failed. In these scenarios the structure will flood and it is vital that the rate of flooding can be estimated, from a limited knowledge of the damage, so that safety and the environment can be best considered and an economical and effective recovery or repair of the vessel occurs. In an effort to improve the modelling and hence improve the advice available, research has been performed into how petalling, folding of the structure at the edge of the damage, effects the flooding of the structure. Experiments have been conducted on petalled structures and the results are compared to the coefficient of discharge for flat edged damages. The results show that petalling makes a substantial difference to the coefficient of discharge of the orifice flow which is largely dependent on the petalling angle which can both reduce or increase the flow rate dependent on the orientation. However, this difference can be predicted if the type of petalling is known.

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The effects of petalling in coefficient of discharge during flooding EDITORIAL REVIEW ver2.pdf - Author's Original
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More information

Accepted/In Press date: September 2013
e-pub ahead of print date: 26 December 2013
Published date: February 2014
Keywords: compartment flooding, coefficient of discharge, damaged structures
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 360288
URI: http://eprints.soton.ac.uk/id/eprint/360288
ISSN: 0889-9746
PURE UUID: 578b926d-7cc9-45a6-8a86-87b894200a2e
ORCID for A.J. Sobey: ORCID iD orcid.org/0000-0001-6880-8338

Catalogue record

Date deposited: 04 Dec 2013 16:27
Last modified: 20 Jul 2019 00:52

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Contributors

Author: Y. Li
Author: A.J. Sobey ORCID iD
Author: M. Tan

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