HY8:Tumbling Flow in Circular Culverts: Difference between revisions
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* Diameter of enlarged culvert | * 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. | The following figures show implementations of tumbling flow within circular culverts along with the variables used to design the energy dissipator. | ||
Revision as of 15:02, 3 June 2016
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
