An analytical study of fluid tank system for reducing the rolling of a ship

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Main Authors:	Gazi, Md. Khalil, Prof., Md. Shahjada, Tarafder, Dr., Md.Shahidul, Islam, Dr.
Other Authors:	khalil@name.buet.ac.bd
Format:	Article
Language:	English
Published:	The Institution of Engineers, Malaysia (IEM) 2013
Subjects:	Anti-Rolling Tank U-Tank Identical tanks Frequency of oscillation Connecting pipe Depth of water Diameter of tanks
Online Access:	http://dspace.unimap.edu.my/xmlui/handle/123456789/28742
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Institution:	Universiti Malaysia Perlis
Language:	English

id	my.unimap-28742
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spelling	my.unimap-287422013-10-10T06:19:37Z An analytical study of fluid tank system for reducing the rolling of a ship Gazi, Md. Khalil, Prof. Md. Shahjada, Tarafder, Dr. Md.Shahidul, Islam, Dr. khalil@name.buet.ac.bd shahjada68@yahoo.com shahid777@name.buet.ac.bd Anti-Rolling Tank U-Tank Identical tanks Frequency of oscillation Connecting pipe Depth of water Diameter of tanks Link to publisher’s homepages at http://www.myiem.org.my/ There have long been attempts to reduce the rolling of ships, prompted by a desire to increase comfort of travel, improve weapon control measures, extend the operation of aircraft, and so on. In many passenger and naval ships anti-rolling tanks are fitted in order to reduce rolling. Anti-rolling tank systems operate on the principle that a fluid, usually water, moves from one tank to another and generates a moment on the ship that counteracts the rolling motion. The principal aim of the present paper is to explain the characteristics of oscillation of fluid in anti-rolling tanks. Using the principle of conservation of energy, a detailed theoretical analysis is performed for the oscillation of water in two identical circular tanks connected by a narrow pipe. A new expression is derived for the frequency of oscillation of water as a function of the diameter of the circular tanks, the depth of water in the tanks, and the length and diameter of the connecting pipe. Subsequently, the expression for the frequency of oscillation of water is modified for the case of two identical rectangular tanks. Then it is analytically demonstrated how the aforesaid tank system can be used to neutralize the rolling motion of a ship. Based on the aforesaid theoretical analysis, a computer program is developed in FORTRAN 95 and executed on the DELL OPTIPLEX 780 computer. The computational results are plotted in order to show how the frequency of oscillation of water is influenced by the diameter of the tanks, the depth of water in the tanks, geometry of the tanks and the length-to-diameter ratio of the connecting pipe. The present theoretical analysis is expected to be useful in the design of anti-rolling tanks which will effectively reduce the rolling motions of a ship. 2013-10-10T06:18:39Z 2013-10-10T06:18:39Z 2012-09 Article The Journal of the Institution of Engineers, Malayasia, vol. 73(3), 2012, pages 23-32 0126-513X http://www.myiem.org.my/content/iem_journal_2012-361.aspx http://hdl.handle.net/123456789/28742 en The Institution of Engineers, Malaysia (IEM)
institution	Universiti Malaysia Perlis
building	UniMAP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Perlis
content_source	UniMAP Library Digital Repository
url_provider	http://dspace.unimap.edu.my/
language	English
topic	Anti-Rolling Tank U-Tank Identical tanks Frequency of oscillation Connecting pipe Depth of water Diameter of tanks
spellingShingle	Anti-Rolling Tank U-Tank Identical tanks Frequency of oscillation Connecting pipe Depth of water Diameter of tanks Gazi, Md. Khalil, Prof. Md. Shahjada, Tarafder, Dr. Md.Shahidul, Islam, Dr. An analytical study of fluid tank system for reducing the rolling of a ship
description	Link to publisher’s homepages at http://www.myiem.org.my/
author2	khalil@name.buet.ac.bd
author_facet	khalil@name.buet.ac.bd Gazi, Md. Khalil, Prof. Md. Shahjada, Tarafder, Dr. Md.Shahidul, Islam, Dr.
format	Article
author	Gazi, Md. Khalil, Prof. Md. Shahjada, Tarafder, Dr. Md.Shahidul, Islam, Dr.
author_sort	Gazi, Md. Khalil, Prof.
title	An analytical study of fluid tank system for reducing the rolling of a ship
title_short	An analytical study of fluid tank system for reducing the rolling of a ship
title_full	An analytical study of fluid tank system for reducing the rolling of a ship
title_fullStr	An analytical study of fluid tank system for reducing the rolling of a ship
title_full_unstemmed	An analytical study of fluid tank system for reducing the rolling of a ship
title_sort	analytical study of fluid tank system for reducing the rolling of a ship
publisher	The Institution of Engineers, Malaysia (IEM)
publishDate	2013
url	http://dspace.unimap.edu.my/xmlui/handle/123456789/28742
_version_	1643795531560910848

An analytical study of fluid tank system for reducing the rolling of a ship

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