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Numerical simulation of unsteady flow in an oil pipeline under various hydraulic conditions

Turan, Emrah
In the present study, transient flow analyses of a long oil pipeline are performed. Transient flow conditions are initiated by typical valve operations and pump trips that may be expected during operation of such pipelines. In order to simulate transient events an existing computer program called “Stoner Pipeline Simulator” has been used for a large number of hydraulic transient conditions. The program is based on the characteristics method solution of the governing water hammer equations. Locations that may be subject to surge pressures of high magnitudes, even exceeding maximum allowable pressure limit have been determined by the program. In the present study, a number of measures to control and preferably to avoid these undesirable surge pressures are also covered. Guidelines for safe operation of the pipeline are developed and suggested for the use of technical personnel.