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Utilities rely on transient analysis of large pipenetworks to properly assess the potential level ofintrusion associated with negative pressure and itseffect on disinfectant residual efficiency. However,the computational demand for large pipe networksis significant, and computational effort and accuracyof solution are interdependent.This research analyzed the numerical accuracy ofsolution and computational efficiency of two popularmethods, the method of characteristics (MOC)and the wave characteristic method (WCM).Results indicated that the WCM is a much moreefficient method for modeling transients, withoutsacrificing accuracy. The WCM constitutes a feasibletool that utilities can use to conduct essentialtransient analysis and address serious low-pressuretransient problems and surge protection issues.For water providers, transient modeling is a"must do" item to safeguard drinking water qualitywithin their distribution systems. Now transientmodeling is also a "can do" task, using the efficientand time-saving method described here. Includes 31 references, tables, figures.

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Edition: Vol. 101 - No. 2 Published: 02/01/2009 Number of Pages: 15File Size: 1 file , 820 KB