Record Display for the EPA National Library Catalog


Main Title Extended Period Simulation of Water Distribution Networks.
Author Ra, H. S. ; Bree, Jr, D. W. ; Benzv, R. ;
CORP Author Systems Control., Inc., Palo Alto, Calif.
Year Published 1974
Report Number DI-14-31-0001-9027; OWRR-C-4164(9027); 05533,; C-4164(9027)(1)
Stock Number PB-230 148
Additional Subjects Water distribution ; Network flows ; Computerized simulation ; Public works ; Distribution systems ; Reservoirs ; Piplines ; Pumps ; Mathematical models ; Newton-Raphson method ; Control theory ; California ; FORTRAN ; WATSIM computer program ; San Jose(California)
Library Call Number Additional Info Location Last
NTIS  PB-230 148 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 156p
An extended period simulation procedure was developed for metropolitan water distribution networks. Efficient sparsity programming techniques were applied to obtain static network balances using a modified Newton-Raphson technique. An integration scheme was developed to link several static solutions each representing an interval of time. A program, called WATSIM, was developed and tested using field data provided by the San Jose Water Works, San Jose, California. Data included network data, switching data, parabolic characteristics of pumps, reservoir curves, and time varying demand patterns. Three cases were simulated: normal operation, emergency operation, and pump outage conditions. (Modified author abstract)