Design of Labyrinth Spillways
The capacity of a labyrinth spillway is a function of the total head, the effective crest length, and the crest coefficient. The crest coefficient depends on the total head, weir height, thickness, crest shape, apex configuration, and the angle of the side legs. Data and a procedure are presented fo...
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| Veröffentlicht in: | Journal of hydraulic engineering (New York, N.Y.) N.Y.), 1995, Vol.121 (3), p.247-255 |
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| container_issue | 3 |
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| container_title | Journal of hydraulic engineering (New York, N.Y.) |
| container_volume | 121 |
| creator | Tullis, J. Paul Amanian, Nosratollah Waldron, David |
| description | The capacity of a labyrinth spillway is a function of the total head, the effective crest length, and the crest coefficient. The crest coefficient depends on the total head, weir height, thickness, crest shape, apex configuration, and the angle of the side legs. Data and a procedure are presented for designing labyrinth weirs for angles between 6° and 35°, and for a range of heads. The design procedure allows the angle of the side legs and the number of cycles to be varied until the desired layout and capacity are achieved. The solution is presented in a spreadsheet format that automatically calculates the dimensions for the labyrinth. Even though the design procedure is quite accurate, it is recommended that the capacity and performance be verified with a model study. The model can evaluate factors not included in the design procedure, like aeration effects at low heads, unusual flow conditions in the approach channel, and flow conditions in the discharge channel. |
| doi_str_mv | 10.1061/(ASCE)0733-9429(1995)121:3(247) |
| format | Article |
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Paul</creatorcontrib><creatorcontrib>Amanian, Nosratollah</creatorcontrib><creatorcontrib>Waldron, David</creatorcontrib><title>Design of Labyrinth Spillways</title><title>Journal of hydraulic engineering (New York, N.Y.)</title><description>The capacity of a labyrinth spillway is a function of the total head, the effective crest length, and the crest coefficient. The crest coefficient depends on the total head, weir height, thickness, crest shape, apex configuration, and the angle of the side legs. Data and a procedure are presented for designing labyrinth weirs for angles between 6° and 35°, and for a range of heads. The design procedure allows the angle of the side legs and the number of cycles to be varied until the desired layout and capacity are achieved. The solution is presented in a spreadsheet format that automatically calculates the dimensions for the labyrinth. Even though the design procedure is quite accurate, it is recommended that the capacity and performance be verified with a model study. The model can evaluate factors not included in the design procedure, like aeration effects at low heads, unusual flow conditions in the approach channel, and flow conditions in the discharge channel.</description><subject>Accuracy</subject><subject>Aeration</subject><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>Capacity</subject><subject>Coefficients</subject><subject>Dams and subsidiary installations</subject><subject>Design factors</subject><subject>Discharge</subject><subject>Exact sciences and technology</subject><subject>Height</subject><subject>Hydraulic constructions</subject><subject>Hydraulic engineering</subject><subject>Layout</subject><subject>Legs</subject><subject>Mathematical models</subject><subject>Pressure head</subject><subject>Q1</subject><subject>Spillways</subject><subject>TECHNICAL PAPERS</subject><issn>0733-9429</issn><issn>1943-7900</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNqNkUFLwzAYhoMoOKc_QdhBdDtUk35JmngQxjadMvQwBW8hTVPt6NqZbMj-vambHp0fhHyHh_d74UHoguBLgjm56vang1EPJwCRpLHsEilZj8TkGroxTXp7qEUkhSiRGO-j1i93iI68n2FMKJeihU6H1hdvVafOOxOdrl1RLd8700VRlp967Y_RQa5Lb0-2fxu93I6eB-No8nR3P-hPIs0AllGSx5iIjOtcE0NECGeaihSMsamlBrIM4kykaZZpENpwhnEmDeecCCNTkUAbnW9yF67-WFm_VPPCG1uWurL1yqs4AcallP8EGd4JEi6BQpjdoOCUsd2nCXAm4qQ5fbMBjau9dzZXC1fMtVsrglWjTqlGnWqUqEaJatSpoE6BCupCwNn2kvZGl7nTlSn8bwpQJgVtmr9usEBZNatXrgqO1MN49DgMDnAIxM1AeCH2eyc_Ff5u8AXReq9O</recordid><startdate>1995</startdate><enddate>1995</enddate><creator>Tullis, J. 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The solution is presented in a spreadsheet format that automatically calculates the dimensions for the labyrinth. Even though the design procedure is quite accurate, it is recommended that the capacity and performance be verified with a model study. The model can evaluate factors not included in the design procedure, like aeration effects at low heads, unusual flow conditions in the approach channel, and flow conditions in the discharge channel.</abstract><cop>Reston, VA</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)0733-9429(1995)121:3(247)</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0733-9429 |
| ispartof | Journal of hydraulic engineering (New York, N.Y.), 1995, Vol.121 (3), p.247-255 |
| issn | 0733-9429 1943-7900 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27356999 |
| source | American Society of Civil Engineers:NESLI2:Journals:2014 |
| subjects | Accuracy Aeration Applied sciences Buildings. Public works Capacity Coefficients Dams and subsidiary installations Design factors Discharge Exact sciences and technology Height Hydraulic constructions Hydraulic engineering Layout Legs Mathematical models Pressure head Q1 Spillways TECHNICAL PAPERS |
| title | Design of Labyrinth Spillways |
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