Record Display for the EPA National Library Catalog

RECORD NUMBER: 186 OF 334

OLS Field Name OLS Field Data
Main Title Mathematical Modeling of Water Distribution Systems.
Author Gilma, Harold D. ; Goodma, Maurice Y. ; Metkowsk, Renette V. ;
CORP Author General Electric Co., Philadelphia, Pa. Re-entry and Environmental Systems Div.
Year Published 1971
Report Number GE-71SD241; DI-14-31-0001-3162; OWRR-C-1725(3162); 00715,; C-1725(3162)(1)
Stock Number PB-204 116
Additional Subjects ( Water distribution ; Systems engineering) ; ( Water pipelines ; Mathematical models) ; Networks ; Management methods ; Real time operations ; Computer programming ; Pipe flow ; Pumps ; Pressure control ; Reviews ; Manuals ; Iteration ; Automatic water distribution systems
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-204 116 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 243p
Abstract
The major objective of the research was to develop a model suitable for simulation and study of real-time control of typical water distribution systems and eventual implementation in a process control computer. A unique approach was developed using an 'inverse solution' to track flow conditions in the field using a limited number of pressure and flow measurements. It uses a network model to iteratively adjust pipe flows to force agreement between calculated and measured pressures; total demand for the model is fixed by the measured pump and tank flows. The model is then used to simulate and evaluate the application of various control alternatives. A demonstration test case was run showing how this approach can be used to control pressure by turning available pumps on/off. The study also included a literature survey, convergence acceleration methods for calculating a network balance, sensitivity of the 'inverse solution' to model data uncertainties, and a compilation of guidelines for water distribution control. IBM 360 Fortran IV source program listings, sample test cases and instructions for using the program are included.