DBPapers
DOI: 10.5593/SGEM2014/B31/S12.021

COMPARSION OF DEMAND DRIVEN AND PRESSURE DRIVEN HYDRAULIC ANALYSIS OF THE IRRIGATION NETWORK

M. Cisty, Z. Bajtek, L. Celar
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-13-1 / ISSN 1314-2704, June 19-25, 2014, Book 3, Vol. 1, 159-166 pp

ABSTRACT
Assessments of irrigation water distribution networks can be approached with two different ways. First approach represents demand-driven analysis, where on the first place lies nodal demand regardless from actual pressure. The other way represents pressure driven analysis which recognizes the relation between nodal heads and nodal flows. This approach is also applicable in scenarios, where the demand is fully dependent on pressure like irrigation sprinkler system. Almost all the traditional network hydraulic models are built upon demand-driven approach. Therefore, it is very desirable that reliability analysis techniques based on interpretations or transformations of demand-driven results from a pressure driven perspective be evaluated. Both of these two approaches were applied on older irrigation network in southern part of Slovakia. Various demand condition were created by an algorithm in the meaning of demand nodes placement. The purpose of this paper is to explore possibility and limits of these two approaches to water distribution network analysis.

Keywords: Irrigation networks, simulation model, demand driven analysis, pressure driven analysis, Epanet