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 the channel at the downstream section, shown in drawing below. 
*Side Slope (H:V) (_:1) — This item applies only to 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 the 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 the elevation of the channel at the culvert outlet.  The program will show actual barrel #1 outlet invert elevation.


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.
[[Image:HY8Tailwater.png|700 px]]
 
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


   
   
[[Image:HY8Tailwater.jpg]]
[[Image:HY8Channel_Shape.jpg|300 px]]
 
 
[[Image:HY8Channel_Shape.jpg]]
 




{{hide in print|
==''Related Topics''==


===Introduction===
{{HY8Main}}
* [[WMS:HY-8|Introduction]]
[[Category:Crossing Data|C]]
===Crossings Data===
* [[WMS:HY-8 Crossings|Crossings]]
* [[WMS:HY-8 Discharge Data|Discharge Data]]
====Roadway Data====
:* [[WMS:HY-8 Roadway Data|Roadway Data]]
:* [[WMS:HY-8 Roadway Profile|Roadway Profile]]
====Tailwater Data====
:* [[WMS:HY-8 Tailwater Data|Tailwater Data]]
:* [[WMS:HY-8 Channel Shape|Channel Shape]]
:* [[WMS:HY-8 Rating Curve|Rating Curve]]
:* [[WMS:HY-8 Constant Tailwater Elevation|Constant Tailwater Elevation]]
=====Irregular Channel=====
::* [[WMS:HY-8 Irregular Channel|Irregular Channel]]
::* [[WMS:HY-8 Irregular Channel Error|Irregular Channel Error]]
}}

Latest revision as of 16:44, 2 March 2018

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 the channel at the downstream section, shown in drawing below.
  • Side Slope (H:V) (_:1) — This item applies only to 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 the 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 the elevation of the channel at the culvert outlet. The program will show actual barrel #1 outlet invert elevation.


HY8Tailwater.png


HY8Channel Shape.jpg


v • e
HY-8
Introduction:Getting Started   •   Layout   •   Vena Contracta   •   Building a Project   •   Locate Project   •   Culvert Crossing Data   •   Run Analysis   •   Report Generation
Crossing and Culvert Data:Crossings   •   Discharge Data   •   Roadway Data   •   Tailwater Data   •   Irregular Channel   •   Culvert Data   •   Site Data   •   Culvert Invert Data   •   Embankment Toe Data
AnalysisProject Units   •   Roadway Overtopping   •   Inlet Control Computations   •   Outlet Control Computations   •   Tables and Plots
Energy DissipationScour Hole Geometry   •   Increased Resistance   •   Tumbling Flow   •   USBR Type IX Baffled Apron   •   Drop Structures   •   Stilling Basins   •   Streambed Level Structures
MethodsAquatic Organism Passage   •   Low Flow Hydraulics
TroubleshootingDifferences from DOS HY-8   •   Limitations   •   HY-8 User Manual
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