HY8:Increased Resistance in Box Culverts: Difference between revisions
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The input variables required for this calculation | The input variables required for this calculation are the following: | ||
* h/r<sub>i</sub> -- Ratio of roughness element height divided by hydraulic radius taken about the top of the roughness element. | * h/r<sub>i</sub> -- Ratio of roughness element height divided by hydraulic radius taken about the top of the roughness element. | ||
* Height of the roughened section (h) | * Height of the roughened section (h) | ||
The following figure shows the flow regimes and variables for an increased resistance energy dissipator implemented in a circular culvert. | The following figure shows the flow regimes and variables for an increased resistance energy dissipator implemented in a circular culvert. | ||
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* h -- height of roughness element | * h -- height of roughness element | ||
* D<sub>i</sub> -- diameter of roughened section (opening) | * D<sub>i</sub> -- diameter of roughened section (opening) | ||
{{HY8Main}} | {{HY8Main}} | ||
Revision as of 20:23, 16 December 2011
The input variables required for this calculation are the following:
- h/ri -- Ratio of roughness element height divided by hydraulic radius taken about the top of the roughness element.
- Height of the roughened section (h)
The following figure shows the flow regimes and variables for an increased resistance energy dissipator implemented in a circular culvert.
Variables from the figure
- L -- Length from beginning of one roughness element to the beginning of the next roughness element.
- h -- height of roughness element
- Di -- diameter of roughened section (opening)
