Unsteady Flow Effect on Pipeline Networks : Numerical Study for the effect of Water Hammer on Pipeline Networks

Gamal Elsaeed

ISBN 10: 3847314076 / ISBN 13: 9783847314073

Verlag: LAP LAMBERT Academic Publishing, 2011

Beschreibung

nach der Bestellung gedruckt Neuware - Printed after ordering - The protection of the irrigation pipeline networks against Water Hammer -as a result of pump power failure- is of great importance. In this study, an improved design for irrigation pipeline networks is investigated.Basic partial differential equations based on one-dimensional homogenous flow model are formulated and solved by the method of characteristics. The differential equations of momentum and continuity are developed for solving transient problem. For transient condition caused by pump failure, four different scenarios were considered to study the impact of column separation of the pipelines system. These scenarios are the steady state condition, transient condition without protection, transient condition with air vessel as a protection and transient condition with air vessel and two surge towers as a protection. Also, the impact of changing diameter and wall thickness of pipes, changing material type and polar moment of inertia of the pump on the magnitude of the maximum pressure heads and column separation were included in the study. The Water Hammer Software 'Wanda V3.30' was applied and the results were graphically presented for different relationships. Bestandsnummer des Verkäufers 9783847314073

Bibliografische Details

Titel: Unsteady Flow Effect on Pipeline Networks : ...

Verlag: LAP LAMBERT Academic Publishing

Erscheinungsdatum: 2011

Einband: Taschenbuch

Zustand: Neu

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Reseña del editor:

The protection of the irrigation pipeline networks against Water Hammer -as a result of pump power failure- is of great importance. In this study, an improved design for irrigation pipeline networks is investigated.Basic partial differential equations based on one-dimensional homogenous flow model are formulated and solved by the method of characteristics. The differential equations of momentum and continuity are developed for solving transient problem. For transient condition caused by pump failure, four different scenarios were considered to study the impact of column separation of the pipelines system. These scenarios are the steady state condition, transient condition without protection, transient condition with air vessel as a protection and transient condition with air vessel and two surge towers as a protection. Also, the impact of changing diameter and wall thickness of pipes, changing material type and polar moment of inertia of the pump on the magnitude of the maximum pressure heads and column separation were included in the study. The Water Hammer Software "Wanda V3.30" was applied and the results were graphically presented for different relationships.