Simulation of Hydropneumatic Tanks in Computer Pipe Network Models
Publication: Journal of Hydraulic Engineering
Volume 131, Issue 10
Abstract
Pipe network computer models of water systems that include hydropneumatic tanks can be used to evaluate performance of existing water systems or in the design of new distribution facilities. Pipe network models allow the modeling of storage tanks in which the free water surface is variable with the inflow and outflow. Most existing pipe network models do not allow direct input of hydropneumatic tanks. Some writers describe modeling of hydropneumatic tanks as a fixed diameter tank of an equivalent area based on the maximum and minimum operating pressures of the tank. In real hydropneumatic tanks, the pressure change due to input or output of water is greater as more water is stored in the tank. A relationship to define the geometry of a free water surface tank that would exactly simulate a hydropneumatic tank was derived which can be input into a pipe network model using the variable area tank feature.
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References
Walski, T. M., Chase, D. V., and Savic, D. V. (2003). Advanced water distribution system modeling, Haested Methods, Waterbury, Conn., Chap. 3, 85–86.
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© 2005 ASCE.
History
Received: Jul 15, 2003
Accepted: Aug 31, 2004
Published online: Oct 1, 2005
Published in print: Oct 2005
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P.E.
Environmental Engineer, Camp Dresser & McKee, Inc., 2301 Maitland Center Pkwy., Suite 300, Maitland, FL 32751. E-mail: [email protected]
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