Full Record Display for the EPA National Library Catalog


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
Library Call Number Additional Info Location Last
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.
NTIS Title Notes Final rept..
PUB Date Free Form Jul 71,
Category Codes 13B; 60I
NTIS Prices PC A11/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326522570
Origin NTIS
Type CAT