Computer analysis of transient effect on pipe system - using method of characteristics

Transient or unsteady phenomenon in a flow system may occur as a result of closing or opening of valves, stoppage of pumps, etc. This phenomenon has to be taken into consideration during design stage. At present, the use of digital computer is so widely used for two basic reasons, achieving more acc...

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Main Author:	Abdul Aziz, Azmahani
Format:	Thesis
Language:	English
Published:	1993
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/7/1/AzmahaniAbdulAzizMFKA1993.pdf
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id	my-utm-ep.7
record_format	uketd_dc
spelling	my-utm-ep.72020-02-04T07:16:10Z Computer analysis of transient effect on pipe system - using method of characteristics 1993-05 Abdul Aziz, Azmahani TA Engineering (General). Civil engineering (General) Transient or unsteady phenomenon in a flow system may occur as a result of closing or opening of valves, stoppage of pumps, etc. This phenomenon has to be taken into consideration during design stage. At present, the use of digital computer is so widely used for two basic reasons, achieving more accuracy and saving time. In this dissertation, the transient effects are analysed using the Method of Characteristics. Besides being able to visualise the actual physical conditions of the flow, the method also caters for all boundary conditions existing in the system. A computer program that is capable of predicting any transient phenomenon in the piping system is produced. A few case studies are identified for analysis, ie, single pipe, series pipe and simple pipe network. The scope of the investigation is limited to transients as a result of valve closure at the downstream end. Two flow parameters, ie, discharge, Q and piezometric head, H are considered. In addition, two types of closure are investigated, namely, rapid and slow closure. In general, results indicate that the transient phenomenon has performed effect around the source (valve). As the distance of propagation increases upstream, this effect slowly deminishes and is finally dissipated. Rapid closure achieves peak pressure time at or before 2L/a, whereas for slow closure, some resonance pressure arises that result in a damping at the end of the time interval. 1993-05 Thesis http://eprints.utm.my/id/eprint/7/ http://eprints.utm.my/id/eprint/7/1/AzmahaniAbdulAzizMFKA1993.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Abdul Aziz, Azmahani Computer analysis of transient effect on pipe system - using method of characteristics
description	Transient or unsteady phenomenon in a flow system may occur as a result of closing or opening of valves, stoppage of pumps, etc. This phenomenon has to be taken into consideration during design stage. At present, the use of digital computer is so widely used for two basic reasons, achieving more accuracy and saving time. In this dissertation, the transient effects are analysed using the Method of Characteristics. Besides being able to visualise the actual physical conditions of the flow, the method also caters for all boundary conditions existing in the system. A computer program that is capable of predicting any transient phenomenon in the piping system is produced. A few case studies are identified for analysis, ie, single pipe, series pipe and simple pipe network. The scope of the investigation is limited to transients as a result of valve closure at the downstream end. Two flow parameters, ie, discharge, Q and piezometric head, H are considered. In addition, two types of closure are investigated, namely, rapid and slow closure. In general, results indicate that the transient phenomenon has performed effect around the source (valve). As the distance of propagation increases upstream, this effect slowly deminishes and is finally dissipated. Rapid closure achieves peak pressure time at or before 2L/a, whereas for slow closure, some resonance pressure arises that result in a damping at the end of the time interval.
format	Thesis
qualification_level	Master's degree
author	Abdul Aziz, Azmahani
author_facet	Abdul Aziz, Azmahani
author_sort	Abdul Aziz, Azmahani
title	Computer analysis of transient effect on pipe system - using method of characteristics
title_short	Computer analysis of transient effect on pipe system - using method of characteristics
title_full	Computer analysis of transient effect on pipe system - using method of characteristics
title_fullStr	Computer analysis of transient effect on pipe system - using method of characteristics
title_full_unstemmed	Computer analysis of transient effect on pipe system - using method of characteristics
title_sort	computer analysis of transient effect on pipe system - using method of characteristics
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	1993
url	http://eprints.utm.my/id/eprint/7/1/AzmahaniAbdulAzizMFKA1993.pdf
_version_	1747814365932814336

Computer analysis of transient effect on pipe system - using method of characteristics

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