Numerical analyses for improved terminal velocity of deep water torpedo anchor

Purpose - This research aims to investigate the effects of manipulation of a torpedo's geometries to attain higher terminal velocity. The parameters of interest include geometric changes of the original design, as well as sea water properties that reflect water depth in South China Sea. Design/...

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Main Authors: Soh, B., Pao, W., Chen, X.H.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.19758 /
Published: Emerald Group Publishing Ltd. 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012965204&doi=10.1108%2fHFF-09-2015-0349&partnerID=40&md5=a88d32e2faee48368f169064d2efa6a3
http://eprints.utp.edu.my/19758/
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id utp-eprints.19758
recordtype eprints
spelling utp-eprints.197582018-04-20T07:37:36Z Numerical analyses for improved terminal velocity of deep water torpedo anchor Soh, B. Pao, W. Chen, X.H. Purpose - This research aims to investigate the effects of manipulation of a torpedo's geometries to attain higher terminal velocity. The parameters of interest include geometric changes of the original design, as well as sea water properties that reflect water depth in South China Sea. Design/methodology/approach - The research make use of computational fluid dynamics (CFD) software, FLUENT, to solve viscous incompressible Navier-Stokes equations with two equations k-epsilon turbulent model. The calculated drag coefficient is subsequently used to calculate the maximum attainable terminal velocity of the torpedo. Findings - It was found that the terminal velocity can be improved by sharper tip angle, greater aspect ratio, greater diameter ratio and optimum rear angle at 30°. Sensitivity of drag coefficient toward each of the parameters is established in this paper. Originality/value - The paper, in addition to verifying the importance of aspect ratio, has also established the tip angle, diameter ratio and rear angle of the torpedo as important geometric aspects that could be tuned to improve its terminal velocity. © Emerald Publishing Limited. Emerald Group Publishing Ltd. 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012965204&doi=10.1108%2fHFF-09-2015-0349&partnerID=40&md5=a88d32e2faee48368f169064d2efa6a3 Soh, B. and Pao, W. and Chen, X.H. (2017) Numerical analyses for improved terminal velocity of deep water torpedo anchor. International Journal of Numerical Methods for Heat and Fluid Flow, 27 (2). pp. 428-443. http://eprints.utp.edu.my/19758/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Purpose - This research aims to investigate the effects of manipulation of a torpedo's geometries to attain higher terminal velocity. The parameters of interest include geometric changes of the original design, as well as sea water properties that reflect water depth in South China Sea. Design/methodology/approach - The research make use of computational fluid dynamics (CFD) software, FLUENT, to solve viscous incompressible Navier-Stokes equations with two equations k-epsilon turbulent model. The calculated drag coefficient is subsequently used to calculate the maximum attainable terminal velocity of the torpedo. Findings - It was found that the terminal velocity can be improved by sharper tip angle, greater aspect ratio, greater diameter ratio and optimum rear angle at 30°. Sensitivity of drag coefficient toward each of the parameters is established in this paper. Originality/value - The paper, in addition to verifying the importance of aspect ratio, has also established the tip angle, diameter ratio and rear angle of the torpedo as important geometric aspects that could be tuned to improve its terminal velocity. © Emerald Publishing Limited.
format Article
author Soh, B.
Pao, W.
Chen, X.H.
spellingShingle Soh, B.
Pao, W.
Chen, X.H.
Numerical analyses for improved terminal velocity of deep water torpedo anchor
author_sort Soh, B.
title Numerical analyses for improved terminal velocity of deep water torpedo anchor
title_short Numerical analyses for improved terminal velocity of deep water torpedo anchor
title_full Numerical analyses for improved terminal velocity of deep water torpedo anchor
title_fullStr Numerical analyses for improved terminal velocity of deep water torpedo anchor
title_full_unstemmed Numerical analyses for improved terminal velocity of deep water torpedo anchor
title_sort numerical analyses for improved terminal velocity of deep water torpedo anchor
publisher Emerald Group Publishing Ltd.
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012965204&doi=10.1108%2fHFF-09-2015-0349&partnerID=40&md5=a88d32e2faee48368f169064d2efa6a3
http://eprints.utp.edu.my/19758/
_version_ 1741196258465284096
score 11.62408

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