The effectiveness of the cylinder block on stilling basin as energy dissipation system

Flow discharge from a spillway to is due to the force of gravity. Therefore, the steeper the outlet spillway, the magnitude of flow velocity will higher. Consequently of high velocity is able to cause erosion and will damage spillway itself. To overcome these problems, the velocity must be reduced....

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Main Author:	Nor Farahiah, Ibrahim
Format:	Undergraduates Project Papers
Language:	English English English
Published:	2015
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/12244/ http://umpir.ump.edu.my/id/eprint/12244/ http://umpir.ump.edu.my/id/eprint/12244/1/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29.pdf http://umpir.ump.edu.my/id/eprint/12244/2/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29%20-%20CHAP%201.pdf http://umpir.ump.edu.my/id/eprint/12244/3/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29%20-%20CHAP%203.pdf

id	ump-12244
recordtype	eprints
spelling	ump-122442016-03-17T06:43:05Z http://umpir.ump.edu.my/id/eprint/12244/ The effectiveness of the cylinder block on stilling basin as energy dissipation system Nor Farahiah, Ibrahim TA Engineering (General). Civil engineering (General) Flow discharge from a spillway to is due to the force of gravity. Therefore, the steeper the outlet spillway, the magnitude of flow velocity will higher. Consequently of high velocity is able to cause erosion and will damage spillway itself. To overcome these problems, the velocity must be reduced. To achieve the purpose, the used of velocity reducing structures are recommended. Many researches have been conducted to identify the effectiveness and economical of velocity reducing structures. Velocity reducing structures is one of the hydraulics structures that reduce high velocity water flow especially at downstream of the spillways. The objective of this study is to determine the performance and effectiveness of velocity reducing structures on the stilling basin through laboratory test. In this study, tests are conducted on cylindrical shape blocks of the velocity reducing structures on the stilling basin. The blocks used in this study have different size and surface roughness, different slope of spillway and different flow rate. The spillway model was erected at the workshop. During the test, the flow depth and velocity are observed before and after the blocks locating on the stilling basin. For concrete blocks size 50×100mm with slope 27˚, the best pattern with a highest percentage reduction in velocity is pattern 3 with 47.03% and for slope 15˚ the percentage reduction in velocity is 50.12%. Based on the results, its shows that the lower slope can increase the percentage of reduction in velocity 2015-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/12244/1/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/12244/2/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29%20-%20CHAP%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/12244/3/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29%20-%20CHAP%203.pdf Nor Farahiah, Ibrahim (2015) The effectiveness of the cylinder block on stilling basin as energy dissipation system. Faculty of Civil Engineering & Earth Resources, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:92070&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Nor Farahiah, Ibrahim The effectiveness of the cylinder block on stilling basin as energy dissipation system
description	Flow discharge from a spillway to is due to the force of gravity. Therefore, the steeper the outlet spillway, the magnitude of flow velocity will higher. Consequently of high velocity is able to cause erosion and will damage spillway itself. To overcome these problems, the velocity must be reduced. To achieve the purpose, the used of velocity reducing structures are recommended. Many researches have been conducted to identify the effectiveness and economical of velocity reducing structures. Velocity reducing structures is one of the hydraulics structures that reduce high velocity water flow especially at downstream of the spillways. The objective of this study is to determine the performance and effectiveness of velocity reducing structures on the stilling basin through laboratory test. In this study, tests are conducted on cylindrical shape blocks of the velocity reducing structures on the stilling basin. The blocks used in this study have different size and surface roughness, different slope of spillway and different flow rate. The spillway model was erected at the workshop. During the test, the flow depth and velocity are observed before and after the blocks locating on the stilling basin. For concrete blocks size 50×100mm with slope 27˚, the best pattern with a highest percentage reduction in velocity is pattern 3 with 47.03% and for slope 15˚ the percentage reduction in velocity is 50.12%. Based on the results, its shows that the lower slope can increase the percentage of reduction in velocity
format	Undergraduates Project Papers
author	Nor Farahiah, Ibrahim
author_facet	Nor Farahiah, Ibrahim
author_sort	Nor Farahiah, Ibrahim
title	The effectiveness of the cylinder block on stilling basin as energy dissipation system
title_short	The effectiveness of the cylinder block on stilling basin as energy dissipation system
title_full	The effectiveness of the cylinder block on stilling basin as energy dissipation system
title_fullStr	The effectiveness of the cylinder block on stilling basin as energy dissipation system
title_full_unstemmed	The effectiveness of the cylinder block on stilling basin as energy dissipation system
title_sort	effectiveness of the cylinder block on stilling basin as energy dissipation system
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/12244/ http://umpir.ump.edu.my/id/eprint/12244/ http://umpir.ump.edu.my/id/eprint/12244/1/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29.pdf http://umpir.ump.edu.my/id/eprint/12244/2/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29%20-%20CHAP%201.pdf http://umpir.ump.edu.my/id/eprint/12244/3/FKASA%20-%20NOR%20FARAHIAH%20IBRAHIM%20%28CD9221%29%20-%20CHAP%203.pdf
first_indexed	2023-09-18T22:13:42Z
last_indexed	2023-09-18T22:13:42Z
_version_	1777415196166324224

The effectiveness of the cylinder block on stilling basin as energy dissipation system

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