Pipe Friction Parameters Identification Method Based on Moore-Penrose Pseudo-Inverse Solution
Publication: Journal of Hydraulic Engineering
Volume 138, Issue 1
Abstract
A method is proposed to study water networks pipe friction parameters (PFPs) identification problem of water networks by solving a PFPs identification equation. The PFPs identification equation corresponding to an actual engineering problem usually has non-unique solutions. To express identification results, a method is proposed which considers the Moore-Penrose pseudo-inverse (MPPI) solution of the PFPs identification equation as the PFPs identification results. Because the PFPs identification equation is a nonlinear equation, the MPPI solution of the PFPs identification equation cannot be expressed directly. Then, a progressive linearization iteration methodology is presented for solving the PFPs identification equation. The identification method is applied in a water distribution network case study, and identification results illustrate that the method is efficient, practical, and reasonable.
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Published In
Journal of Hydraulic Engineering
Volume 138 • Issue 1 • January 2012
Pages: 100 - 104
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Aug 27, 2010
Accepted: Jun 16, 2011
Published online: Jun 18, 2011
Published in print: Jan 1, 2012
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