Solution to a Waterhammer Problem: A Case Studyby Andreas M. Schulte, Stoner Associates Inc, Carlisle, PA, USA,
Joseph R. Kroon, Stoner Associates Inc, Carlisle, PA, USA,
Abstract: Waterhammer is caused by a rapid change in the flow velocity of liquid in a pressurized pipeline. Therefore, the potential for waterhammer exists in almost every pressurized liquid piping system, and potential waterhammer problems should be considered when any pipeline design is evaluated. A case study of the solution to a waterhammer problem experienced in a sewage force main is presented. Damage to an air and vacuum valve revealed that serious waterhammer events were occurring. Computer simulations are used to analyze the probable cause of the damage and develop a method for avoiding further problems.
Subject Headings: Water hammer | Valves | Pressure pipes | Case studies | Sewage | Pipelines | Pumping stations | Pipe flow
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