TECHNICAL PAPERS
Mar 1, 1986

Explicit Pipe Network Calibration

Publication: Journal of Water Resources Planning and Management
Volume 112, Issue 2

Abstract

In order to improve the reliability of hydraulic network models as well as eliminate the need for trial‐and‐error calibration methods, an explicit calibration algorithm is proposed. The calibration algorithm is formulated in terms of headloss coefficients and is developed from a reformulation of the basic network equations. The basic network equations are solved explicitly for headloss adjustments to exactly meet one or more measured conditions of pressure or flow for given network loading and operating conditions. The adjustments determined in this manner are used to revise pipe roughnesses or defined concentrated head (minor) losses to meet the measured conditions. In order to demonstrate the feasibility of the approach, the developed algorithm is applied to an example network.

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References

1.
Wood, D. J., and Rayes, A. G., “Reliability of Algorithms for Pipe Network Analysis,” Journal of the Hydraulics Division, ASCE, Vol. 107, No. HY10, Oct., 1981, pp. 1145–1161.
2.
Walski, T. M., “Technique for Calibrating Network Models,” Journal of Water Resources Planning and Management, Vol. 109, No. 4, Oct., 1983, pp. 360–372.
3.
“Water Distribution and Applied Development Needs,” American Water Works Associated Research Committee on Distribution Systems, Journal of the American Water Works Association, Vol. 66, No. 6, June, 1974, pp. 385–390.
4.
Eggener, C. L., and Polkowski, L. B., “Network Models and the Impact of Modeling Assumptions,” Journal of the American Water Works Association, Vol. 68, No. 4, Apr., 1976, pp. 189–196.
5.
Shamir, U., and Howard, C. D. D., “Engineering Analysis of Water Distribution System,” Journal of the American Water Works Association, Vol. 69, No. 9, Sept., 1977, pp. 510–514.
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Cesario, A. L., “Computer Modeling Programs: Tools for Model Operations,” Journal of the American Water Works Association, Vol. 72, No. 9, Sept., 1980, pp. 508–513.
7.
Shamir, U., and Howard, C. D. D., “Water Distribution Systems Analysis,” Journal of the Hydraulics Division, ASCE, Vol. 94, No. 1, Jan., 1968, pp. 219–234.
8.
Donachie, R. P., “Digital Program for Water Network Analysis,” Journal of the Hydraulics Division, ASCE, Vol. 100, No. 3, Mar., 1974, pp. 393–403.
9.
Gofman, E., and Rodeh, M., “Loop Equations with Unknown Pipe Characteristics,” Journal of the Hydraulics Division, ASCE, Vol. 107, No. 9, Sept., 1981, pp. 1047–1060.

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Go to Journal of Water Resources Planning and Management
Journal of Water Resources Planning and Management
Volume 112Issue 2March 1986
Pages: 166 - 182

History

Published online: Mar 1, 1986
Published in print: Mar 1986

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Authors

Affiliations

Lindell E. Ormsbee, A. M. ASCE
Asst. Prof., Dept. of Civ. Engrg., Univ. of Kentucky, Lexington, KY 40506‐0046
Don J. Wood, M. ASCE
Prof., Dept. of Civ. Engrg., Univ. of Kentucky, Lexington, KY 40506‐0046

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