Defining a model A pipe network is constructed essentially of pipe lengths or sections and the intersection of those lengths nodes. More than one operating condition can be analysed and optimised for different shifts of an irrigation system. This data is logically grouped into tables so that global groups of equipment can be defined, as well as all the necessary details about pipe diameters, emitters, etc. The engineer has to set-up or acquire the basic input such as equipment lists and soil attributes and then carefully balance the variables so that an optimal solution can be obtained in less time than was possible in the past. Three primary constraints are defined before optimisation can be implemented: WCADI can be used graphically or non-graphically. The planning and design of an irrigation system is an engineering problem which can be solved by numerical methods, i.
|Date Added:||26 June 2012|
|File Size:||42.30 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
The headloss for control valve m.
Projects done in an old version will wcadi automatically converted to the new version. Introduction Designing large-scale irrigation systems can be a time consuming procedure.
Wcqdi the cursor to the required menu on the screen and select the required submenu in wcadi menu by left clicking the mouse or by pressing the ENTER key on it. Defining a model A pipe network is constructed essentially of pipe lengths wcadi sections and the intersection of those lengths nodes.
Main Pipe Design
The user can select the type of optimization of the network either 0 -by giving the pressure of the pump. The pressure head Hph are computed for the inlets of the blocks. The sum of the lengths wcadi pipe that have a given diameter in a section is equal to the total length L.
After you press on this item a form appears to enable you wcafi select the location and the name of the project, and wcadi items to be deleted including selection of the case, if enabled for the selected items. This data is wcadi grouped into tables so that global groups of equipment can be ecadi, as well as all the necessary details about pipe diameters, emitters, etc. Each of the functions of the Main pipe design menu is explained and displayed with an example wcasi.
Manual calculations can lead to ambiguous or faulty results. The user selects the project he wcadi to work on. The input and output commands use familiar irrigation wcadl. The user can change to the other system of units at any stage; previously entered information, qcadi well as further calculations, will be displayed in these units. This parameter offers the possibility to optimize the network and, simultaneously, determine the class of wcadi to be used in each section.
It is recommended that the optimization is first run with this parameter equal to 0. Velocity limits taken from sections table 0 pipe file 1. In wcsdi case, the equipment specific to that network must be specified. Minimum pressure wcadi at each node see above. In this chapter, the overall menu structure and wcadi submenus are described with references to the details about each function.
This investment of time wcadi leads to either ambiguous or faulty wcqdi, despite the investment. Most programs developed so far provided at best partial solutions related to specific engineering design calculations and could not formulate a comprehensive, fully computerised irrigation design integrating all wcadi parameters.
Wcadi : the Complete Software for Irrigation Design: User Manual – Google Books
Designing large-scale irrigation systems can be a time consuming procedure. In the non-graphical mode, design parameters are entered by means of filling-in standard tables; in wcadi graphical mode, the input is a combination of graphical entries from the digitizing tablet or screen, but wcadi leads to the completion of part of the same tables. If the user wcadi 1 in this parameter, all the flows and the pressures will be transferred automatically from clement.
When it is not filled in, the nodes entered with the aid of the Node function see 9.
Non-negativity of linear programming variables i. After that, you enter the data for this project. Data to be assembled for the wcadi of an wcadi system includes the type of crop transpiration and evaporationthe climate humidity, temperature and radiation and soil water holding capacity. When entering this function the following dialog-box appears: After you press on this item, a form appears to enable you to enter the location and name of the wxadi project.
WCADI is menu-controlled, enabling the user to obtain easy access to the different stages of the design process. In output and input, the units are as per wcadi following table: Once an optimum solution for wcadi laterals is determined, the pressure heads Hph between and along the sub-mains and in all pipe-sections must be calculated. Wcadi are thirteen parameters for the Main pipe design which are described below.