Modeling of Flow Control Valves with a Nonzero Loss Coefficient
This article has a reply.
VIEW THE REPLYThis article has a reply.
VIEW THE REPLYPublication: Journal of Hydraulic Engineering
Volume 142, Issue 11
Abstract
As shown by the examples given in this paper, a commonly used, commercially available water distribution network modeling software may produce unrealistic results for flow control valves (FCVs) with a nonzero loss coefficient. This paper presents and discusses a simple technique to remedy this problem. According to this technique, an FCV with a nonzero loss coefficient is modeled as a composite link that consists of an FCV of the same setting with a zero loss coefficient and an artificial pipe of negligibly small major loss with a diameter equal to the FCV diameter and a minor loss coefficient equal to . The proposed technique can be implemented using the discussed software without any modification of its hydraulic solver.
Get full access to this article
View all available purchase options and get full access to this article.
References
Álvarez, R., et al. (2008). “Pseudotransient continuation method in extended period simulation of water distribution systems.” J. Hydraul. Eng., 1473–1479.
Álvarez, R., Gorev, N. B., Kodzhespirova, I. F., Kovalenko, Y., Prokhorov, E., and Ramos, A. (2011). “Pseudotransient continuation-based steady state solver: Extension to zero flow rates.” J. Hydraul. Eng., 393–397.
Alvarruiz, F., Martínez-Alzamora, F., and Vidal, A. M. (2015). “Improving the efficiency of the loop method for the simulation of water distribution systems.” J. Water Resour. Plann. Manage., 04015019.
Deuerlein, J., Simpson, A., and Dempe, S. (2009a). “Modeling the behavior of flow regulating devices in water distribution systems using constrained nonlinear programming.” J. Hydraul. Eng., 970–982.
Deuerlein, J., Simpson, A., and Gross, E. (2009b). “The never ending story of modeling control devices in hydraulic systems analysis.” Proc., Water Distribution Systems Analysis 2008, ASCE, Reston, VA, 1–12.
EPANET 2 version 2.00.12 [Computer software]. U.S. EPA, Cincinnati.
Gorev, N. B., Kodzhespirova, I. F., Kovalenko, Y., Álvarez, R., Prokhorov, E., and Ramos, A. (2011). “Evolutionary testing of hydraulic simulator functionality.” Water Resour. Manage., 25(8), 1935–1947.
Piller, O., and van Zyl, J. (2014). “Modeling control valves in water distribution systems using a continuous state formulation.” J. Hydraul. Eng., 04014052.
Rossman, L. A. (2000). Epanet 2 user’s manual, U.S. EPA, Cincinnati.
Sivakumar, P., and Prasad, R. K. (2014). “Simulation of water distribution network under pressure-deficient condition.” Water Resour. Manage., 28(10), 3271–3290.
Todini, E., and Pilati, S. (1988). “A gradient projection algorithm for the analysis of pipe networks.” Computer applications in water supply and distribution, Research Study Press, Taunton, U.K.
Information & Authors
Information
Published In
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jan 13, 2016
Accepted: Apr 19, 2016
Published online: Jul 11, 2016
Published in print: Nov 1, 2016
Discussion open until: Dec 11, 2016
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.