Flow Net Drawing Software
Dia Diagram Editor is free Open Source drawing software for Windows, Mac OS X and Linux. Dia supports more than 30 different diagram types like flowcharts, network diagrams, database models. More than a thousand readymade objects help to draw professional diagrams.
Dia can read and write a number of different raster and vector image formats. Software developers and database specialists can use Dia as a CASE tool to generate code skeletons from their drawings. Dia can be scripted and extended using Python. I have used Dia for my own side projects and, as a professor of computer science, I have recommended this tool to my students for their UML diagrams. I find Dia to be easier to use than others that I have tried, like Microsoft Visio. I like it's many features, including export to various image formats that enables me to create clean diagrams for use in things such as assignments and exams. Students like the fact that it is cross-platform, which enables them to use their personal computers with Windows, OSX, and Linux and share the.dia files.
Some diagramming tools use templates that create a whole diagram for you. However, they tend to be hard to modify. With Dia, UML diagrams are build up by component. This provides more flexibility but can have its own issues and takes a bit more time.
One issue that my students and I typically face is too few connection points on a class object. This makes it difficult to use autoroute and not have lines overlap. Basic editor for basic diagrams, if you want some serious stuff, than look elsewere.
A flownet is a graphical representation of two- steady-state flow through. Construction of a flownet is often used for solving groundwater flow problems where the geometry makes analytical solutions impractical. The method is often used in, or as a first check for problems of flow under hydraulic structures like or sheet walls. As such, a grid obtained by drawing a series of equipotential lines is called a flownet. The flownet is an important tool in analysing two-dimensional irrotational flow problems. Flow net technique is a graphical representation method.
Flow Net Drawing Software
Contents. Basic method The method consists of filling the flow area with stream and equipotential lines, which are everywhere to each other, making a. Typically there are two surfaces (boundaries) which are at constant values of potential or hydraulic head (upstream and downstream ends), and the other surfaces are no-flow boundaries (i.e., impermeable; for example the bottom of the dam and the top of an impermeable bedrock layer), which define the sides of the outermost streamtubes (see figure 1 for a stereotypical flownet example). Mathematically, the process of constructing a flownet consists of the two harmonic or of potential and. These functions both satisfy the and the contour lines represent lines of constant head (equipotentials) and lines tangent to flowpaths (streamlines).
Together, the potential function and the stream function form the, where the potential is the real part, and the stream function is the imaginary part. Casagrande, A., 1937. Seepage through dams, Journal of New England Water Works, 51, 295-336 (also listed as: Harvard Graduate School Eng. 209). Cedergren, Harry R.
(1977), Seepage, Drainage, and Flow Nets, Wiley. CRC Press, Taylor & Francis Group, Leiden, The Netherlands, 478 pages. Knappett, Jonathan and R.F. Craig's Soil Mechanics 8th edition, Spon Press.
Ferris, J.G., D.B. Knowles, R.H. Stallman, 1962. Theory of Aquifer Tests.
US Geological Survey Water-Supply Paper 1536-E. (available from the ). Harr, M.E., 1962.
Groundwater and Seepage, Dover. — mathematical treatment of 2D groundwater flow, classic work on flownets.
See also. (the flownet is a method for solving potential flow problems). (the potential and streamfunction plotted in flownets are examples of analytic functions ).