Tuesday, March 14, 2006

The Draft for Pressure Pipe System

The Draft for Road Design

Civil and Irrigation Engineering Design


IrriPro is the designer for residential, light commercial and landscape irrigation, since it has a professional team to do that. IrriPro 's engineer team has done many excellent jobs in irrigation and civil engineering by the way of whole solution in one package. With over 20 years of experience as a land, irrigation and engineering technician, IrriPro has provided consulting, and technical support to many public as well as private engineering and irrigation firms across China.
Following is our finished project design draft.

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Tuesday, March 07, 2006

The Basic Theorem and Math Model of Piping Network

Abstract
This paper gives out a hydraulic model and its basic concept about piping net element, and introduces theorem of its copulation 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 copulation, 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 as . For the Reynolds number, they use the Moody diagram to determine the "f” value needed for the Darcy-Weisbach equation. The same way is used when using the Hazen-Williams formula. Actually, the two formulas are the same, only that, the shapes in expression are different. Above-mentioned formula is applied as base of hydraulics analysis. This computational method only gets out static parameter of pipe section, in case of operative and dynamic state of water pump, when pump is hand-in-hand working with the pipes, the changing of whole systematic state is unable to accurately present with this approach.
The writer gave forth, at 1988, THE METHOD OF AUTOMATIC SUITABLE SIMULATION FOR SPRAY SYSTEM, which presents dynamic state simulating method of tree like network in analysis of piping net in spray system.
Today, for the reason of saving energy and water, people need more and more precision application of water. Then analytical theory is needed to apply an exact method to analyze the piping network. This paper offers the rationale of analysis in piping net and forwards the methodology of piping analysis.
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This is a Blog, which can not post all paper in, specially, for the formula. So if you are interesting please contact me at irripro@163.com.

Thank you for visit here.

Ming

Monday, March 06, 2006

INTRODUCTION

I graduated from a famous university in China, Beijing Agricultural Engineering University (Now, as China Agricultural University of East Campus), Department of Civil and Water Conservancy Engineering. I got the degree of B. E. Science. ( 4 years ). My Mathematical and Physical Sciences Scores was A+ when graduation.
After graduating from the university I spent most my time in Piping Engineering Projects and Computer Software Development more than 20 years. Then after my experiences enriched, I got and held the position of senior engineer. I got more Computer Software Development training. I am familiar with most kind of software including ACAD, Autodesk Land Desktop 2006 and Civil 3D 2006 programs. I got the solid experience in the physical and mathematical modeling technical method with computer software. I understand the principal of and know the technology for irrigation and drainage in agricultural engineering, including survey, planning, design and installation.
I got experience in C++, VB, JAVA, ASP and Assemble Languages and showed my ability in my Irrigation CAD software development and upgrade of Sprinkler Testing System in Australia. I had demonstrated my skills in modern software techniques, including object oriented programming, graphical interfaces and presentation. I showed my skills in the upgrading of STS software, when I worked with ICMS, Loxton, South Australia. That also showed my ability of cooperation with other experts outside of China. Further information regarding my experience can be obtained from ICMS Mr. Mark Skewes. I am familiar with the Mathematics Model of Piping System or Engineering Computer Software Usage. I was successful developed Irrigation System Model knew as THE METHOD OF AUTOMATIC SUITABLE SIMULATION FOR SPRAY SYSTEM.