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Title: Controlling Surges In Liquid Pipelines
Author: Don A
Source: 1978 International School of Hydrocarbon Measurement
Year Published: 1978
Abstract: Surge pressures in liquid pipelines have been recognized for some time, but until recently the methods used in the calculation of transient pressures made use of a number of assumptions which could lead to serious errors. Potential surge pressures can be predicted using the basic water hammer equations, although their use cannot deal with effects of long valve closure times, attentuation, or line packing within the piping system during the transient state. With the development of analysis procedures making use of the method of characteristics a mathematical model can be formed on a digital computer which produces values of pressure and velocity. These values are calculated for successive increments of time, and produce a, pressure/time history for the entire piping system. This method of analysis yields results showing the effects of potential surge, attenuation due to friction of line packing resulting from recovery of friction head loss with an acceptable degree of accuracy.

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