AWWA ACE61801

In the past, mosttransient analysis was performed only on large transmission mains using highly skeletonizedmodels for engineering design, and proprietary transient computer programs were largely limitedto specialized consulting companies, research organizations, and universities. In addition toimproved design and operation of water distribution systems, a driving force behind this trend isthe increased awareness that hydraulic transients can also create unexpected opportunities forpathogens present in the external environment to intrude into the distribution system withdisastrous consequences to public health. Thus, transient events cause health risks and can lead toincreased leakage or decreased reliability. Transient flow simulation has become an essentialrequirement for assuring safety and the safe operation of drinking water distribution systems.Modern management of water distribution systems needs simulation models that are able toaccurately predict transient flow and pressure variations within the distribution systemenvironment. This paper provides a basic understanding of the physical phenomena and contextof transient conditions, presents practical guidelines for their suppression and control, anddescribes a highly efficient Lagrangian-based simulation scheme that compares favorably withtraditional Eulerian-based hydraulic transient methods for analyzing large-scale, all-pipe waterdistribution system models. Includes 24 references, table, figures.

Product Details

Edition:

Vol. - No.

Published:

06/17/2005

Number of Pages:

19

File Size:

1 file , 1.3 MB