HY8:Channel Shape: Difference between revisions

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There are three available channel shapes to define the downstream tailwater channel: rectangular, trapezoidal, and triangular. When selecting a channel shape the input window adjusts to display only those parameters required for the defined shape.  When defining a channel shape, the following channel properties are required for analysis:
There are three available channel shapes to define the downstream tailwater channel: rectangular, trapezoidal, and triangular. When selecting a channel shape the input window adjusts to display only those parameters required for the defined shape.  When defining a channel shape, the following channel properties are required for analysis:


Bottom Width -- Width of channel at downstream section, shown in drawing below.   
Bottom Width — Width of channel at downstream section, shown in drawing below.   


Side Slope (H:V) (_:1) -- This item applies only for trapezoidal and triangular channels.  The user defines the ratio of Horizontal/Vertical by entering the number of horizontal units for one unit of vertical change.
Side Slope (H:V) (_:1) — This item applies only for trapezoidal and triangular channels.  The user defines the ratio of Horizontal/Vertical by entering the number of horizontal units for one unit of vertical change.


Channel Slope  -- Slope of channel in m/m or ft/ft.  If a zero slope is entered, an error message appears upon exiting the input data window.  The user must enter a slope greater than zero before the crossing may be analyzed.
Channel Slope  — Slope of channel in m/m or ft/ft.  If a zero slope is entered, an error message appears upon exiting the input data window.  The user must enter a slope greater than zero before the crossing may be analyzed.


Manning's 'n'  -- User defined MANNING'S roughness coefficient for the channel.  
Manning's 'n'  — User defined MANNING'S roughness coefficient for the channel.  


Channel Invert Elevation  -- User must enter elevation.  Program will show actual barrel #1 outlet invert elevation
Channel Invert Elevation  — User must enter elevation.  Program will show actual barrel #1 outlet invert elevation


   
   

Revision as of 21:50, 9 January 2013

There are three available channel shapes to define the downstream tailwater channel: rectangular, trapezoidal, and triangular. When selecting a channel shape the input window adjusts to display only those parameters required for the defined shape. When defining a channel shape, the following channel properties are required for analysis:

Bottom Width — Width of channel at downstream section, shown in drawing below.

Side Slope (H:V) (_:1) — This item applies only for trapezoidal and triangular channels. The user defines the ratio of Horizontal/Vertical by entering the number of horizontal units for one unit of vertical change.

Channel Slope — Slope of channel in m/m or ft/ft. If a zero slope is entered, an error message appears upon exiting the input data window. The user must enter a slope greater than zero before the crossing may be analyzed.

Manning's 'n' — User defined MANNING'S roughness coefficient for the channel.

Channel Invert Elevation — User must enter elevation. Program will show actual barrel #1 outlet invert elevation


HY8Tailwater.jpg


HY8Channel Shape.jpg