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Title: Gas Distribution Network Analysis Steady-State Or Transient
Author: T. E. Richwine
Source: American Gas Association 1985
Year Published: 1985
Abstract: Since the lime of Bernouilli (1738), it has been recognized that there is a pressure loss associated with a certain quantity of gas flowing through a piece of pipe that is proportional to the square of the volocity. These calculations have been studied in great detail, resulting in many different gas flow equations. In more recent times, engineers have developed automated procedures for solving these pressure-flow equations for many pipes interconnected in very complex networks. Solution techniques for solving these sorts of problems have been thoroughly described in the literature as well. 2iA However, in both the single pipe case, or in the heavily networked case, one simplifying assumption is often made: the gas flow within the system is steady with respect to time. In other words, the mass of gas flowing into one end of a pipe is, at the same time, exiting the other end of the pipe, and, therefore, there is no change in the amount of gas (linepack) that is stored in the pipe.

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