Calibration Of The Water Distribution Network Model
Author(s)
T.Koppel, N.Kandler, A.Vassiljev
Abstract
Calibration of the water distribution network
model
T. Koppel\ N. Randier* & A. Vassiljev*
* Department of Mechanics,
^Department of Environmental Engineering,
Tallinn Technical University, Estonia
Abstract
As a rule models for water distribution systems have to be calibrated for better
reflection of the behaviour of the real system. As the first step of calibration the
distribution of water losses due to leakage must be studied. Two approaches are
proposed in order to calculate the leakage from pipes. The first of them uses an
empirical formula which takes into account the length of pipe and mean pressure.
This leakage is carried to the terminal nodes and distributed between the nodes
proportionally to the pressure in the nodes. For evaluation of pressure in the
nodes an iteration process is applied which determines the leakage and pressures
intermittently. The second approach uses differences between the measured and
calculated pressures. Areas with underestimated and overestimated pressu
Keywords
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