The Methodology of Analysis for Piping Network
Abstract
This 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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Go to:
http://docs.google.com/Doc?id=df9wc4xb_64g9mwtxw6
For detail.
Labels: Analysis, Li Ming, Methodology, Ming Lee, Piping Network
Basic Theorem and Math Model of Pipe Network
Abstract
This paper gives out a hydraulic model and its basic concept about piping
net element, and introduces theorem of its joined elements for in piping
network. In the paper, author gives the basic shape of hydraulic model as
a power function in mathematics, and points out two important
coefficients of the function is coefficient of proportionality and
coefficient of exponent. According to the concept of pipe element and
its combination model, author presents the application of the theorem
and its network analysis method.
Key word: pipe joined, hydraulics, model, piping network.
Introduction
Generally, we use some formulas, known as Darcy-Weisbach formula or
Hazen-Williams, to analysis the piping network in hydraulics. Many
hydraulics books have a description of this, for Darcy-Weisbach formula
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Paper online:
http://docs.google.com/Doc?docid=df9wc4xb_1cphcxx&hl=en_GB
If you can not get it, send email to irripro@163.com with your email address. I will open the view right for you.
Labels: CAD, Model, Pipe Network
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NOTE!
All file which was download from http://www.live-share.com/ has been moved.
Now you can get The Methodology of Analysis for Piping Network at:
http://docs.google.com/Doc?docid=df9wc4xb_64g9mwtxw6&hl=en_GB
Labels: downlaod, IrriPro, Paper, remove
Irrigation Show 2008
I will be at Irrigation Show 2008, Anaheim Convention Center, Anaheim, California, November 2-4, 2008. Anyone who want to share with in Irrigation System CAD for Engineer, PLS send a message for me.
Wellcome to share CAD software development or Irrigation piping network analysis, if you are interesting PLS email: irripro@163.com for make appointment.
Labels: irrigation;pipe network; CAD; sprinkler; rotor; softwear development
Sprinkler CAD
Sprinkler irrigation CAD softwear has been developed at this moment, it is in testing step, PLS let me if you are interesting to see it.
Labels: sprinkler CAD pipe design
Fundamental of Pipe
This paper gives out a hydraulic model and its basic concept about piping net element, and introduces theorem of its joined elements for in piping network. In the paper, author gives the basic shape of hydraulic model as a power function in mathematics, and points out two important coefficients of the function is coefficient of proportionality and coefficient of exponent. According to the concept of pipe element and its combination model, author presents the application of the theorem and its network analysis method.
Download at:
Fundamental and Math of Network.pdfLabels: basic concept, Fundamental of Pipe, hydraulic model
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Crop Water Simulation 1
Crop accumulative water analysis when getting good irrigation.
Labels: Crop Water Simulation
Crop Water Simulation 2
The crop water simulation when irrigation on time.
Labels: Crop Water Simulation
