This refers to an open channel that has a cross-section that is not a simple trapezoidal, rectangular or triangular shape. The cross-section of such channels must be defined as a series of x-y coordinates, as shown below.
Closed conduits with unusual shapes can be modelled as irregular open channels defined by x-y coordinates and with a roof covering a small gap at the top.
Following a run, flowrates through a channel and water levels at its ends can be viewed in the Main Window. Options for displaying more detailed results are given in the Pop-Up (right mouse button) menu View Cross Sections provides a display showing the channel cross section and the peak water levels at each cross section entered. View maximum water level profile gives a longitudinal display of the profile.
In this window you can enter and review data for open channels that: are prismatic but have a shape other than trapezoidal, triangular or rectangular, or do not have a regular cross-sectional shape, such as sections that occur with a natural stream ...
This tool, , enables you to enter an irregular channel in the Main Window. When you click on this tool, the arrow cursor changes to a pencil. Click your left mouse button when the point of the pencil is located at the upstream end of the channel. The ...
This tool, , enables you to draw a prismatic channel in the Main Window. When you select it, the arrow cursor changes to a pencil that draws a channel by clicking on the upstream and downstream end points. (You can enter several channel reaches ...
This window shows a diagram of a trapezoidal open channel, with text boxes in which the bottom width, side slopes and height can be entered or displayed. Asymmetric channels with different side slopes on each side can be accommodated. For vertical ...
This refers to an open channel that has the same cross-section and bed slope throughout. This may have a rectangular, trapezoidal, semi-circular or other cross-sectional shape. Note that rectangular and triangular shapes are special cases of the ...