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Energy Dissipation in Thirty-Foot Broken-Back Culverts Using Laboratory Models

Tyagi A. / Ali A. / Hamilton M.

This research investigated the reduction in scour downstream of a broken-back culvert by forming a hydraulic jump inside the culvert. A broken-back culvert is used in areas of high relief and steep topography as it has one or more breaks in profile slope. A broken-back culvert in the laboratory represents a 1 (vertical) to 2 (horizontal) slope after the upstream inlet and then continues 90 feet at a 1 percent slope in the flat part of the culvert to the downstream outlet. The prototype for these experiments was either a two-barrel 10-foot by 10-foot, or a two-barrel 10-foot by 20-foot reinforced concrete culvert. The drop between the inlet and outlet was designated to be chosen to be 30 feet. Three flow conditions were simulated, consisting of 0.8, 1.0 and 1.2 times the culvert depth.

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Energy Dissipation in Thirty-Foot Broken-Back Culverts Using Laboratory Models

Tyagi A. / Ali A. / Hamilton M.

This research investigated the reduction in scour downstream of a broken-back culvert by forming a hydraulic jump inside the culvert. A broken-back culvert is used in areas of high relief and steep topography as it has one or more breaks in profile slope. A broken-back culvert in the laboratory represents a 1 (vertical) to 2 (horizontal) slope after the upstream inlet and then continues 90 feet at a 1 percent slope in the flat part of the culvert to the downstream outlet. The prototype for these experiments was either a two-barrel 10-foot by 10-foot, or a two-barrel 10-foot by 20-foot reinforced concrete culvert. The drop between the inlet and outlet was designated to be chosen to be 30 feet. Three flow conditions were simulated, consisting of 0.8, 1.0 and 1.2 times the culvert depth.

Energy Dissipation in Thirty-Foot Broken-Back Culverts Using Laboratory Models

Tyagi A. / Ali A. / Hamilton M.

This research investigated the reduction in scour downstream of a broken-back culvert by forming a hydraulic jump inside the culvert. A broken-back culvert is used in areas of high relief and steep topography as it has one or more breaks in profile slope. A broken-back culvert in the laboratory represents a 1 (vertical) to 2 (horizontal) slope after the upstream inlet and then continues 90 feet at a 1 percent slope in the flat part of the culvert to the downstream outlet. The prototype for these experiments was either a two-barrel 10-foot by 10-foot, or a two-barrel 10-foot by 20-foot reinforced concrete culvert. The drop between the inlet and outlet was designated to be chosen to be 30 feet. Three flow conditions were simulated, consisting of 0.8, 1.0 and 1.2 times the culvert depth.

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Title:

Energy Dissipation in Thirty-Foot Broken-Back Culverts Using Laboratory Models

Contributors:

Tyagi A. (author) / Ali A. (author) / Hamilton M. (author)

Publication date:

2014

Size:

170 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Natural Resource Management , Hydrology & Limnology , Energy , Environmental Studies , Broken back culvert , Pressure flow , Open channel flow , Culverts , Laboratory models , Energy dissipation , Flow conditions , Downstream effects , Hydraulic jump , Topography

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