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Analysis of Water Hammer with Different Closing Valve Laws on Transient Flow of Hydrogen-Natural Gas Mixture
Joint Authors
Subani, Norazlina
Amin, Norsarahaida
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-06
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Water hammer on transient flow of hydrogen-natural gas mixture in a horizontal pipeline is analysed to determine the relationship between pressure waves and different modes of closing and opening of valves.
Four types of laws applicable to closing valve, namely, instantaneous, linear, concave, and convex laws, are considered.
These closure laws describe the speed variation of the hydrogen-natural gas mixture as the valve is closing.
The numerical solution is obtained using the reduced order modelling technique.
The results show that changes in the pressure wave profile and amplitude depend on the type of closing laws, valve closure times, and the number of polygonal segments in the closing function.
The pressure wave profile varies from square to triangular and trapezoidal shape depending on the type of closing laws, while the amplitude of pressure waves reduces as the closing time is reduced and the numbers of polygonal segments are increased.
The instantaneous and convex closing laws give rise to minimum and maximum pressure, respectively.
American Psychological Association (APA)
Subani, Norazlina& Amin, Norsarahaida. 2015. Analysis of Water Hammer with Different Closing Valve Laws on Transient Flow of Hydrogen-Natural Gas Mixture. Abstract and Applied Analysis،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1052062
Modern Language Association (MLA)
Subani, Norazlina& Amin, Norsarahaida. Analysis of Water Hammer with Different Closing Valve Laws on Transient Flow of Hydrogen-Natural Gas Mixture. Abstract and Applied Analysis No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1052062
American Medical Association (AMA)
Subani, Norazlina& Amin, Norsarahaida. Analysis of Water Hammer with Different Closing Valve Laws on Transient Flow of Hydrogen-Natural Gas Mixture. Abstract and Applied Analysis. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1052062
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052062