The Methodology of Analysis for Piping Network
AbstractThis paper gives out a methodology analysis for pipe network, and introduces method of software for piping network. It gives out Linear Equation for control network or no control (basic) network numeric model; the pipe and related elements can be defined as components of a segment, in the segment, there are pipe, pump, regulator, tee, valve and control so on. According to Kirchhoff’s laws, this network model solved by linear equation and can be used in analysis, optimization and simulation of the water distribution network model.
Key word: network analysis, piping network.
Introduction
The knowledge about water network models is presented here can be a general description in graph theoretical and the fundamental of Kirchhoff’s physical laws. It is useful to distinguish between basic two terminal components with regular characteristics and complex components with control loops that potentially have irregular (non-monotonic, non-smooth) characteristics. The two terminal components are described by an equation relating element or component flow q and the head loss hf , or . For the complex components the origin and destination heads may appear explicitly as separate variables, e.g. . Equations (8) and (17) are the set of fundamental equations for analyzing a water distribution network. The nodal model has nodal heads for unknown variables and finally the mixed model has both branch flows and nodal heads as the variables. The numerical algorithms for solving the non-linear equations are based on iterative techniques where during each iteration; a system of linear equation shall be solved.
This paper offers the rationale of analysis in piping network and forwards the methodology of piping analysis.
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http://docs.google.com/Doc?id=df9wc4xb_64g9mwtxw6
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Labels: Analysis, Li Ming, Methodology, Ming Lee, Piping Network
posted by IrriPro @ 11:22 PM
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