HY8:Tumbling Flow in Circular Culverts: Difference between revisions
From XMS Wiki
Jump to navigationJump to search
No edit summary |
|||
| Line 11: | Line 11: | ||
Variables from the figure | Variables from the figure | ||
* D | * D — Diameter of original culvert | ||
* V<sub>n</sub> | * V<sub>n</sub> — Tailwater velocity | ||
* y<sub>n</sub> | * y<sub>n</sub> — Tailwater depth | ||
* L | * L — Length from beginning of one roughness element to the beginning of the next roughness element. | ||
* h | * h — Height of roughness element | ||
* h<sub>1</sub> | * h<sub>1</sub> — length from top of roughness element to enlarged culvert ceiling | ||
* h<sub>2</sub> | * h<sub>2</sub> — height of splash shield on enlarged culvert ceiling. | ||
* h<sub>3</sub> | * h<sub>3</sub> — rise of enlarged culvert. | ||
[[Image:HY8fig7-4.jpg]] | [[Image:HY8fig7-4.jpg]] | ||
| Line 24: | Line 24: | ||
Variables from the figure | Variables from the figure | ||
* D | * D — Diameter of original culvert | ||
* D<sub>1</sub> | * D<sub>1</sub> — Diameter of enlarged culvert | ||
* D<sub>i</sub> | * D<sub>i</sub> — Diameter of roughened section | ||
* h | * h — Height of roughness element | ||
* L | * L — Length from beginning of one roughness element to the beginning of the next roughness element. | ||
[[Image:HY8image6.jpg]] | [[Image:HY8image6.jpg]] | ||
| Line 34: | Line 34: | ||
Variables from the figure | Variables from the figure | ||
* D | * D — Diameter of original culvert | ||
* T | * T — Water surface width at critical flow condition | ||
* y | * y — Depth of flow | ||
{{HY8Main}} | {{HY8Main}} | ||
Revision as of 00:08, 10 January 2013
The only input variable required for this calculation is the following:
- Diameter of enlarged culvert
The following figures show implementations of tumbling flow within circular culverts along with the variables used to design the energy dissipator.
Variables from the figure
- D — Diameter of original culvert
- Vn — Tailwater velocity
- yn — Tailwater depth
- L — Length from beginning of one roughness element to the beginning of the next roughness element.
- h — Height of roughness element
- h1 — length from top of roughness element to enlarged culvert ceiling
- h2 — height of splash shield on enlarged culvert ceiling.
- h3 — rise of enlarged culvert.
Variables from the figure
- D — Diameter of original culvert
- D1 — Diameter of enlarged culvert
- Di — Diameter of roughened section
- h — Height of roughness element
- L — Length from beginning of one roughness element to the beginning of the next roughness element.
Variables from the figure
- D — Diameter of original culvert
- T — Water surface width at critical flow condition
- y — Depth of flow
