Analysis of Hammer Head at Increased Flow Demand in Pipe Networks: a Case Study


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Abstract


With the increase demand of water in an urban area it becomes necessary to increase the capacity of the water pipeline networks by keeping the pipes and valves elements unchanged as it is very difficult work to change those in an urban area due to inaccessibility. This paper presents a study on characteristics of mainly hammer head at increased flow demand in pipeline networks using HAMMER software. For modeling the pipeline distribution networks, the parameters of the pipes, junctions and other elements were inserted in the above software according to the layout of distribution network of Dhapa water treatment plant, Kolkata Municipal Corporation, West Bengal, India. The flow capacity of the pipeline networks were increased in the order of 25 percent, 50 percent, 75 percent and 100 percent more than the existing flow capacity of the above networks and the transient analyses were done accordingly. Increasing trends of hammer head, pressure and circumferential stress with respect to increased flow demand were observed for all the zones which satisfy the basic equation for water hammer theoretically. It was also checked whether the pipes are safe for taking the load of increased flow demand.
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Keywords


Flow Demand; Hoop Stress; Pipeline Network; Transient Analysis; Water Hammer

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References


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